{"title":"Coaxial Electrospinning Needles","description":"\u003ch2\u003eCoaxial needles for core-shell electrospinning\u003c\/h2\u003e\n\u003cp\u003eCoaxial needles let you \u003cstrong\u003espin two or more polymers simultaneously within the same fiber\u003c\/strong\u003e, producing nanofibers with an inner core and outer shell for drug delivery, tissue engineering, filtration and energy applications.\u003c\/p\u003e\n\u003cp\u003eAll Linari Nanotech coaxial needles are manufactured in Pisa, Italy, in \u003cstrong\u003eAISI 316 stainless steel\u003c\/strong\u003e, operate up to 120 °C and resist the most corrosive solvents. They connect through standard Luer Lock and Luer-UNF fittings, so they are \u003cstrong\u003ecompatible with all electrospinning systems\u003c\/strong\u003e — Linari or third-party. All products ship worldwide from Italy.\u003c\/p\u003e\n\u003ch3\u003eChoose your coaxial system\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eReady to start — sealed needles.\u003c\/strong\u003e The \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/sealed-coaxial-needle-kit\"\u003eSealed Coaxial Needle Kit\u003c\/a\u003e is the most cost-effective entry point: laser-welded needle, dielectric support and fittings in one complete set. Need just the needle? Buy the \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/sealed-coaxial-needles\"\u003esingle sealed coaxial needle\u003c\/a\u003e (2 or 3 layers, G21\/G15\/G11) or save up to 9% with the \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/sealed-coaxial-needles-3pcs-set\"\u003e3-pack\u003c\/a\u003e, ideal for parallel arrays and spares.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMaximum flexibility — the modular system.\u003c\/strong\u003e The \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/coaxial-needle-kit\"\u003eModular Coaxial Needle Kit\u003c\/a\u003e offers interchangeable tips and full disassembly for cleaning; \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/base\"\u003ebases\u003c\/a\u003e and \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/tip\"\u003etips\u003c\/a\u003e (gauge 11, 15 and 21, three lengths) are also available individually, so you can change diameters or upgrade from 2 to 3 layers at any time.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAccessories and spares.\u003c\/strong\u003e The \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/dielectric-support\"\u003edielectric needle support\u003c\/a\u003e positions needles safely inside the chamber, the \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/sealing-kit\"\u003eNBR O-ring sealing kit\u003c\/a\u003e keeps modular needles leak-free, and the \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/coaxial-needles-adapter\"\u003eLuer-UNF fitting\u003c\/a\u003e connects your fluid lines.\u003c\/p\u003e\n\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003ch4\u003eSealed or modular: which should I buy?\u003c\/h4\u003e\n\u003cp\u003eChoose \u003cstrong\u003esealed\u003c\/strong\u003e needles if you want the lowest cost, a compact format and parallel multi-needle arrays with fixed geometry. Choose the \u003cstrong\u003emodular\u003c\/strong\u003e system if you need to change tip diameters between experiments, clean internal surfaces thoroughly or grow from 2 to 3 layers over time.\u003c\/p\u003e\n\u003ch4\u003eWhat can I make with core-shell nanofibers?\u003c\/h4\u003e\n\u003cp\u003eTypical applications include controlled drug release (active core, protective shell), tissue engineering scaffolds combining mechanical strength and biocompatibility, encapsulation of sensitive compounds, and self-healing or functional composite fibers.\u003c\/p\u003e\n\u003ch4\u003eDo coaxial needles work with my existing electrospinning system?\u003c\/h4\u003e\n\u003cp\u003eYes — any system with one syringe pump per layer (two pumps for core-shell, three for triaxial) and a high-voltage supply. Connections are standard Luer Lock \/ Luer-UNF.\u003c\/p\u003e\n\u003ch4\u003eWhat else do I need besides the needle?\u003c\/h4\u003e\n\u003cp\u003eSyringes, tubing and fittings — you will find glass syringes, PVC and PTFE tubing in our \u003ca href=\"https:\/\/www.linarinanotech.com\/collections\/consumables-for-electrospinning-machine\"\u003econsumables collection\u003c\/a\u003e. If you are configuring a full setup, see our \u003ca href=\"https:\/\/www.linarinanotech.com\/collections\/electrospinning-machines\"\u003eelectrospinning machines\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"tip","title":"Coaxial Needle Tips – Interchangeable, AISI 316","description":"\u003cp\u003e\u003cstrong\u003eInterchangeable coaxial needle tips\u003c\/strong\u003e adaptable to different diameters.\u003c\/p\u003e\n\u003cp\u003eForget compromises: the ideal solution for \u003cstrong\u003ecore-shell electrospinning\u003c\/strong\u003e with any type of polymer, even in the most corrosive solvents.\u003c\/p\u003e\n\u003ch2\u003eINTERCHANGEABLE COAXIAL TIPS\u003c\/h2\u003e\n\u003cp\u003eAll the tips are made of AISI 316 stainless steel and are laser welded for maximum cleanliness and precision. Customized tips can be created upon request with diameters and lengths to suit your needs.\u003c\/p\u003e\n\u003ch3\u003eWHAT ADVANTAGES DO YOU GET FROM USING COAXIAL NEEDLES?\u003c\/h3\u003e\n\u003cp\u003eWith coaxial needles, you gain the ability to spin two or more polymers simultaneously within the same fiber. This allows the production of \u003cstrong\u003efibers with an inner core and outer shell\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv\u003eThis is useful when a single material would force a compromise between two properties — for example, one material offers the desired mechanical strength, while a different material shows a better degradation rate.\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/ucarecdn.com\/ac602329-9921-4a8d-a926-679b2ce577c4\/-\/format\/auto\/-\/preview\/480x480\/-\/quality\/lighter\/core-shell-fibers.png\" alt=\"Core-shell fibers produced by coaxial electrospinning\" width=\"479\" height=\"177\"\u003e\u003c\/div\u003e\n\u003cp\u003eThe interchangeable tips make it easy to replace the tip of every layer of the coaxial needle in order to \u003cstrong\u003eadapt different diameters\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAssembly is done with a simple screwdriver, supplied as standard, thanks to a proprietary high-precision connection with the base, which makes it possible to \u003cstrong\u003eachieve stable and repeatable geometries\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eLOOKING FOR AN ALL-INCLUSIVE SOLUTION?\u003c\/h3\u003e\n\u003cp\u003eWe offer the base, dielectric support, tips, sealing kit and female Luer adapter \u003cstrong\u003e\u003ca title=\"Modular Coaxial Needle Kit\" href=\"https:\/\/www.linarinanotech.com\/products\/coaxial-needle-kit\"\u003eall included in a single kit\u003c\/a\u003e\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eTIP SIZES\u003c\/h3\u003e\n\u003ch4\u003eLENGTH 35.75 MM\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eCOAX-N108: gauge 21 – 0.83 mm OD – 0.51 mm ID\u003c\/li\u003e\n\u003cli\u003eCOAX-N118: gauge 15 – 1.83 mm OD – 1.37 mm ID\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eLENGTH 25.25 MM\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eCOAX-N208: gauge 21 – 0.83 mm OD – 0.51 mm ID\u003c\/li\u003e\n\u003cli\u003eCOAX-N218: gauge 15 – 1.83 mm OD – 1.37 mm ID\u003c\/li\u003e\n\u003cli\u003eCOAX-N230: gauge 11 – 3.05 mm OD – 2.39 mm ID\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eLENGTH 15 MM\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eCOAX-N308: gauge 21 – 0.83 mm OD – 0.51 mm ID\u003c\/li\u003e\n\u003cli\u003eCOAX-N318: gauge 15 – 1.83 mm OD – 1.37 mm ID\u003c\/li\u003e\n\u003cli\u003eCOAX-N330: gauge 11 – 3.05 mm OD – 2.39 mm ID\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTIP SELECTION GUIDE\u003c\/h3\u003e\n\u003ch4\u003eLAYER 1 (INTERNAL) BASE\u003c\/h4\u003e\n\u003cp\u003eSuitable with all COAX-N tips. At least the second layer base (COAX-L2M) is necessary to complete a coaxial system.\u003c\/p\u003e\n\u003ch4\u003eLAYER 2 (INTERMEDIATE) BASE\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eLayer 1 COAX-N108 → Layer 2 COAX-N218\u003c\/li\u003e\n\u003cli\u003eLayer 1 COAX-N118 → Layer 2 COAX-N230\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAt least the first layer base (COAX-L1M) is necessary to complete a coaxial system.\u003c\/p\u003e\n\u003ch4\u003eLAYER 3 (EXTERNAL) BASE\u003c\/h4\u003e\n\u003cp\u003eLayer 1 COAX-N108 → Layer 2 COAX-N218 → Layer 3 COAX-N330\u003c\/p\u003e\n\u003cp\u003eThe first (COAX-L1M) and second layer (COAX-L2M) bases are necessary to complete a coaxial system.\u003c\/p\u003e\n\u003ch3\u003eFREQUENTLY ASKED QUESTIONS\u003c\/h3\u003e\n\u003ch4\u003eWhich gauge combination should I choose for core-shell electrospinning?\u003c\/h4\u003e\n\u003cp\u003eThe most common 2-layer configuration pairs a gauge 21 inner tip (COAX-N108) with a gauge 15 intermediate tip (COAX-N218). For viscous shell solutions or 3-layer systems, add the gauge 11 external tip (COAX-N330).\u003c\/p\u003e\n\u003ch4\u003eAre these tips compatible with my existing coaxial needle?\u003c\/h4\u003e\n\u003cp\u003eThese tips fit the Linari \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/base\"\u003emodular coaxial needle bases\u003c\/a\u003e. If you use a different system, contact us: customized tips with different diameters and lengths can be manufactured on request.\u003c\/p\u003e\n\u003ch4\u003eCan the tips withstand aggressive solvents and high temperatures?\u003c\/h4\u003e\n\u003cp\u003eYes. AISI 316 stainless steel with laser-welded construction resists the most corrosive solvents and operates up to 120 °C without geometric deformation.\u003c\/p\u003e","brand":"Linari Nanotech","offers":[{"title":"Layer 1 Gauge 15","offer_id":31191673438288,"sku":"BI-COAXN118","price":85.1,"currency_code":"EUR","in_stock":true},{"title":"Layer 1 Gauge 21","offer_id":31191673471056,"sku":"BI-COAXN108","price":85.1,"currency_code":"EUR","in_stock":true},{"title":"Layer 2 Gauge 11","offer_id":31191673503824,"sku":"BI-COAXN230","price":85.1,"currency_code":"EUR","in_stock":true},{"title":"Layer 2 Gauge 15","offer_id":31191673536592,"sku":"BI-COAXN218","price":85.1,"currency_code":"EUR","in_stock":true},{"title":"Layer 2 Gauge 21","offer_id":31191673569360,"sku":"BI-COAXN208","price":85.1,"currency_code":"EUR","in_stock":true},{"title":"Layer 3 Gauge 11","offer_id":31191673602128,"sku":"BI-COAXN330","price":85.1,"currency_code":"EUR","in_stock":true},{"title":"Layer 3 Gauge 21","offer_id":31191673634896,"sku":"BI-COAXN308","price":85.1,"currency_code":"EUR","in_stock":true},{"title":"Layer 3 Gauge 15","offer_id":31191673667664,"sku":"BI-COAXN318","price":85.1,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0255\/7109\/8704\/products\/Product_0001_Tip2.png?v=1575363384"},{"product_id":"base","title":"Modular Coaxial Needle Base – AISI 316, Core-Shell","description":"\u003cp\u003eBase of modular coaxial needle to \u003cstrong\u003ecustomize\u003c\/strong\u003e your coaxial electrospinning equipment.\u003cbr\u003eThe ideal solution for \u003cstrong\u003ecore-shell electrospinning\u003c\/strong\u003e with any type of polymer, even in the most corrosive solvents.\u003c\/p\u003e\n\u003ch2\u003eSETUP WITH INTERCHANGEABLE AND DETACHABLE TIPS\u003c\/h2\u003e\n\u003cp\u003eAll the tips are made of AISI 316 stainless steel and are laser welded for \u003cstrong\u003emaximum cleanliness and precision\u003c\/strong\u003e. Customized tips can be created upon request with diameters and lengths differing from those listed in this catalog.\u003c\/p\u003e\n\u003ch3\u003eWHAT ADVANTAGES DO YOU GET FROM USING INTERCHANGEABLE TIPS?\u003c\/h3\u003e\n\u003cdiv\u003eWith coaxial needles, you gain the ability to spin two or more polymers simultaneously within the same fiber. This allows the production of \u003cstrong\u003efibers with an inner core and outer shell\u003c\/strong\u003e.\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg alt=\"Core-shell fibers produced by coaxial electrospinning\" src=\"https:\/\/ucarecdn.com\/ac602329-9921-4a8d-a926-679b2ce577c4\/-\/format\/auto\/-\/preview\/480x480\/-\/quality\/lighter\/core-shell-fibers.png\"\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe interchangeable \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/tip\"\u003etips\u003c\/a\u003e make it easy to replace the tip of every layer of the coaxial needle in order to \u003cstrong\u003eadapt different diameters\u003c\/strong\u003e.\u003c\/div\u003e\n\u003cdiv\u003eAssembly is done with a simple screwdriver, supplied as standard, thanks to a proprietary high-precision connection with the base, which makes it possible to \u003cstrong\u003eachieve stable and repeatable geometries\u003c\/strong\u003e.\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg alt=\"Modular coaxial needle base in AISI 316 stainless steel\" src=\"https:\/\/ucarecdn.com\/c2964175-d572-4af0-87d7-f0162d44f43b\/-\/format\/auto\/-\/preview\/480x480\/-\/quality\/lighter\/base-coaxial.jpg\"\u003e\u003c\/div\u003e\n\u003cdiv\u003eNeedle tips and \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/dielectric-support\"\u003edielectric support\u003c\/a\u003e are \u003cstrong\u003enot included\u003c\/strong\u003e.\u003c\/div\u003e\n\u003ch3\u003eDISCOVER HOW TO ASSEMBLE THE MODULAR COAXIAL NEEDLE\u003c\/h3\u003e\n\u003cdiv\u003e\u003ca href=\"https:\/\/www.youtube.com\/watch?v=IMVgDIgbzLI\"\u003eSEE VIDEO\u003c\/a\u003e\u003c\/div\u003e\n\u003chr\u003e\n\u003ch3\u003eLOOKING FOR AN ALL-INCLUSIVE SOLUTION?\u003c\/h3\u003e\n\u003cp\u003eWe offer the base, dielectric support, tips, sealing kit and female Luer adapter — \u003cstrong\u003eall included in a \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/coaxial-needle-kit\"\u003esingle kit\u003c\/a\u003e\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eCOMPATIBLE TIP SIZES\u003c\/h3\u003e\n\u003ch4\u003eLENGTH 35.75 MM\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eCOAX-N108: gauge 21 – 0.83 mm OD – 0.51 mm ID\u003c\/li\u003e\n\u003cli\u003eCOAX-N118: gauge 15 – 1.83 mm OD – 1.37 mm ID\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eLENGTH 25.25 MM\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eCOAX-N208: gauge 21 – 0.83 mm OD – 0.51 mm ID\u003c\/li\u003e\n\u003cli\u003eCOAX-N218: gauge 15 – 1.83 mm OD – 1.37 mm ID\u003c\/li\u003e\n\u003cli\u003eCOAX-N230: gauge 11 – 3.05 mm OD – 2.39 mm ID\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eLENGTH 15 MM\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eCOAX-N308: gauge 21 – 0.83 mm OD – 0.51 mm ID\u003c\/li\u003e\n\u003cli\u003eCOAX-N318: gauge 15 – 1.83 mm OD – 1.37 mm ID\u003c\/li\u003e\n\u003cli\u003eCOAX-N330: gauge 11 – 3.05 mm OD – 2.39 mm ID\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBASE SELECTION GUIDE\u003c\/h3\u003e\n\u003ch4\u003eLAYER 1 BASE – INTERNAL\u003c\/h4\u003e\n\u003cp\u003eSuitable with all COAX-N tips. At least the second layer (COAX-L2M) is necessary to complete a coaxial system.\u003c\/p\u003e\n\u003ch4\u003eLAYER 2 BASE – INTERMEDIATE\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eLayer 1 COAX-N108 → Layer 2 COAX-N218\u003c\/li\u003e\n\u003cli\u003eLayer 1 COAX-N118 → Layer 2 COAX-N230\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAt least the first layer (COAX-L1M) is necessary to complete a coaxial system.\u003c\/p\u003e\n\u003ch4\u003eLAYER 3 BASE – EXTERNAL\u003c\/h4\u003e\n\u003cp\u003eLayer 1 COAX-N108 → Layer 2 COAX-N218 → Layer 3 COAX-N330\u003c\/p\u003e\n\u003cp\u003eThe first (COAX-L1M) and second layer (COAX-L2M) are necessary to complete a coaxial system.\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg alt=\"Modular coaxial needle base layers\" src=\"https:\/\/ucarecdn.com\/37ca2a2c-1207-4901-bbeb-eb6f6d6cb2ad\/-\/format\/auto\/-\/preview\/480x480\/-\/quality\/lighter\/base-layer.jpg\"\u003e\u003c\/div\u003e\n\u003ch3\u003eFREQUENTLY ASKED QUESTIONS\u003c\/h3\u003e\n\u003ch4\u003eWhat do I need for a complete 2-layer modular coaxial needle?\u003c\/h4\u003e\n\u003cp\u003eTwo bases (Layer 1 internal + Layer 2 intermediate), two \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/tip\"\u003etips\u003c\/a\u003e (e.g. gauge 21 + gauge 15), a \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/dielectric-support\"\u003edielectric support\u003c\/a\u003e and a \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/sealing-kit\"\u003esealing kit\u003c\/a\u003e. The \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/coaxial-needle-kit\"\u003eModular Coaxial Needle Kit\u003c\/a\u003e includes everything at a bundle price.\u003c\/p\u003e\n\u003ch4\u003eCan I upgrade from 2 to 3 layers later?\u003c\/h4\u003e\n\u003cp\u003eYes — that is the main advantage of the modular system. Add the Layer 3 external base and a gauge 11 tip at any time; the existing components remain in use.\u003c\/p\u003e\n\u003ch4\u003eHow do the modular bases differ from sealed coaxial needles?\u003c\/h4\u003e\n\u003cp\u003eModular bases accept interchangeable tips and can be disassembled for cleaning and diameter changes, while \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/sealed-coaxial-needles\"\u003esealed coaxial needles\u003c\/a\u003e are welded single pieces — more compact and lower cost, but with fixed geometry.\u003c\/p\u003e\n\u003cp\u003eDiscover the \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/base#show-m-1646738403800\"\u003eCoaxial Accessories Brochure\u003c\/a\u003e\u003c\/p\u003e","brand":"Linari Nanotech","offers":[{"title":"Layer 1-Internal","offer_id":31191697457232,"sku":"BI-COAXL1M","price":1808.95,"currency_code":"EUR","in_stock":true},{"title":"Layer 2- Intermediate","offer_id":31191697490000,"sku":"BI-COAXL2M","price":1484.65,"currency_code":"EUR","in_stock":true},{"title":"Layer 3- External","offer_id":31191697522768,"sku":"BI-COAXL3M","price":1252.35,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0255\/7109\/8704\/products\/Base_int.png?v=1585060668"},{"product_id":"coaxial-needle-kit","title":"Modular Coaxial Needle Kit – 2 or 3 Layers, Core-Shell Electrospinning","description":"\u003cp\u003eThe Modular Coaxial Needle Kit is the \u003cstrong\u003eideal solution\u003c\/strong\u003e for \u003cstrong\u003ecore-shell electrospinning\u003c\/strong\u003e with any type of polymer, even in the most corrosive solvents.\u003cbr\u003eRemovable and interchangeable tips, easy to clean.\u003c\/p\u003e\n\u003ch2\u003eIDEAL FOR CORE-SHELL ELECTROSPINNING\u003c\/h2\u003e\n\u003cp\u003eThe modular coaxial needles are made of AISI 316 stainless steel and can be \u003cstrong\u003emanufactured with tips of different diameters\u003c\/strong\u003e, even beyond the catalog range. Thanks to their stable and accurate structure they \u003cstrong\u003ecan also operate at high temperatures\u003c\/strong\u003e (up to 120 °C) without geometric deformation or leakage of liquids or gas.\u003c\/p\u003e\n\u003cp\u003eThe minimum configuration requires \u003cstrong\u003e2 concentric layers\u003c\/strong\u003e, which can be disassembled or integrated at any time with a \u003cstrong\u003ethird external layer\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eWHAT ADVANTAGES DO YOU GET FROM USING THIS KIT?\u003c\/h3\u003e\n\u003cdiv\u003eEvery concentric needle is independent, so \u003cstrong\u003eit can be equipped with a different diameter and supplied with solutions of different materials\u003c\/strong\u003e through standard Luer Lock connections. All surfaces are designed without dead spaces for \u003cstrong\u003eeasy cleaning\u003c\/strong\u003e. The screw closing system guarantees \u003cstrong\u003egreat simplicity of maintenance\u003c\/strong\u003e.\u003c\/div\u003e\n\u003cdiv\u003eThe perfect axial-symmetrical shape — guaranteed by the exclusive design with all fluid connections behind the needle plane — and the perfectly smooth surface of the coaxial needles ensure \u003cstrong\u003ean electric field of excellent quality for stable and accurate nanofiber production\u003c\/strong\u003e even in difficult conditions.\u003c\/div\u003e\n\u003ch3\u003eWHY PREFER A MODULAR COAXIAL SYSTEM INSTEAD OF A SEALED ONE?\u003c\/h3\u003e\n\u003cp\u003eWith coaxial needles you gain the ability to spin two or more polymers simultaneously within the same fiber, producing a fiber with an \u003cstrong\u003einner core and outer shell\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg alt=\"Core-shell fiber with inner core produced by coaxial electrospinning\" src=\"https:\/\/ucarecdn.com\/25f398a8-822c-426e-bdf2-b01d70025a8e\/-\/format\/auto\/-\/preview\/480x480\/-\/quality\/lighter\/fiber-inner-core.jpg\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eThis is useful\u003c\/strong\u003e when a single material would force a compromise between two properties — for example, one material offers the desired mechanical strength, while a different material shows a better degradation rate.\u003c\/p\u003e\n\u003cp\u003eCompared to the \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/sealed-coaxial-needle-kit\"\u003eSealed Coaxial Needle Kit\u003c\/a\u003e, this modular solution allows changing tips according to your needs, making it a long-lasting investment.\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg alt=\"Modular coaxial needle kit, detail\" src=\"https:\/\/ucarecdn.com\/dd81fb3a-5ccd-43fc-9157-286264c9da41\/-\/format\/auto\/-\/preview\/3000x3000\/-\/quality\/lighter\/coaxial-needle-kit-detail.jpg\"\u003e\u003c\/div\u003e\n\u003ch3\u003eWHICH SYSTEMS IS IT COMPATIBLE WITH?\u003c\/h3\u003e\n\u003cp\u003eThe modular coaxial needles can be integrated with the \u003cstrong\u003eStarter Kit\u003c\/strong\u003e, the \u003cstrong\u003eRT Collector\u003c\/strong\u003e, the \u003cstrong\u003eEasy Drum\u003c\/strong\u003e and the \u003cstrong\u003eRT Advanced\u003c\/strong\u003e, provided the system has a number of syringe pumps equal to the number of concentric layers used.\u003c\/p\u003e\n\u003ch3\u003eWHICH PRODUCTS ARE INCLUDED?\u003c\/h3\u003e\n\u003ch4\u003eDOUBLE LAYER COAXIAL NEEDLES WITH ADJUSTABLE DIELECTRIC SUPPORT\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"https:\/\/www.linarinanotech.com\/products\/base\"\u003eBase of modular coaxial needle\u003c\/a\u003e, layer 1 – internal:\u003c\/strong\u003e 1 pc.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"https:\/\/www.linarinanotech.com\/products\/base?variant=31191697490000\"\u003eBase of modular coaxial needle\u003c\/a\u003e, layer 2 – intermediate:\u003c\/strong\u003e 1 pc.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"https:\/\/www.linarinanotech.com\/products\/tip?variant=31191673471056\"\u003eTip\u003c\/a\u003e, layer 1, gauge 21 (0.83 mm):\u003c\/strong\u003e 1 pc.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"https:\/\/www.linarinanotech.com\/products\/tip?variant=31191673536592\"\u003eTip\u003c\/a\u003e, layer 2, gauge 15 (1.83 mm):\u003c\/strong\u003e 1 pc.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"https:\/\/www.linarinanotech.com\/products\/dielectric-support\"\u003eDielectric support for coaxial needles\u003c\/a\u003e:\u003c\/strong\u003e 1 pc.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"https:\/\/www.linarinanotech.com\/products\/sealing-kit\"\u003eSealing kit for coaxial needles\u003c\/a\u003e:\u003c\/strong\u003e 1 pc.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFemale Luer adapter:\u003c\/strong\u003e 2 pcs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTRIPLE LAYER COAXIAL NEEDLES WITH ADJUSTABLE DIELECTRIC SUPPORT AND LUER POWER CONNECTORS\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"https:\/\/www.linarinanotech.com\/products\/base\"\u003eBase of modular coaxial needle\u003c\/a\u003e, layer 1 – internal:\u003c\/strong\u003e 1 pc.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"https:\/\/www.linarinanotech.com\/products\/base?variant=31191697490000\"\u003eBase of modular coaxial needle\u003c\/a\u003e, layer 2 – intermediate:\u003c\/strong\u003e 1 pc.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"https:\/\/www.linarinanotech.com\/products\/base?variant=31191697522768\"\u003eBase of modular coaxial needle\u003c\/a\u003e, layer 3 – external:\u003c\/strong\u003e 1 pc.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"https:\/\/www.linarinanotech.com\/products\/tip?variant=31191673471056\"\u003eTip\u003c\/a\u003e, layer 1, gauge 21 (0.83 mm):\u003c\/strong\u003e 1 pc.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"https:\/\/www.linarinanotech.com\/products\/tip?variant=31191673536592\"\u003eTip\u003c\/a\u003e, layer 2, gauge 15 (1.83 mm):\u003c\/strong\u003e 1 pc.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"https:\/\/www.linarinanotech.com\/products\/tip?variant=31191673536592\"\u003eTip\u003c\/a\u003e, layer 3, gauge 11 (3.05 mm):\u003c\/strong\u003e 1 pc.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"https:\/\/www.linarinanotech.com\/products\/dielectric-support\"\u003eDielectric support for coaxial needles\u003c\/a\u003e:\u003c\/strong\u003e 1 pc.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"https:\/\/www.linarinanotech.com\/products\/sealing-kit\"\u003eSealing kit for coaxial needles\u003c\/a\u003e:\u003c\/strong\u003e 1 pc.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"https:\/\/www.linarinanotech.com\/products\/coaxial-needles-adapter\" title=\"Luer-UNF fitting for coaxial needles\"\u003eLuer-UNF adapter\u003c\/a\u003e:\u003c\/strong\u003e 3 pcs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWATCH THE VIDEO TO FIND OUT HOW TO ASSEMBLE IT\u003c\/h4\u003e\n\u003ch4\u003e\u003ca href=\"https:\/\/youtu.be\/IMVgDIgbzLI\"\u003eSEE VIDEO\u003c\/a\u003e\u003c\/h4\u003e\n\u003ch4\u003eDISCOVER THE \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/coaxial-needle-kit?_pos=2\u0026amp;_sid=924ae191d\u0026amp;_ss=r#show-m-1646741469466\"\u003eCOAXIAL ACCESSORIES BROCHURE\u003c\/a\u003e\n\u003c\/h4\u003e\n\u003ch3\u003eFREQUENTLY ASKED QUESTIONS\u003c\/h3\u003e\n\u003ch4\u003eShould I choose the 2-layer or 3-layer kit?\u003c\/h4\u003e\n\u003cp\u003eChoose the 2-layer kit for standard core-shell fibers (one core, one shell). The 3-layer kit adds an external layer for triaxial fibers — useful for multi-drug delivery systems, protective intermediate layers or complex release profiles. You can also start with 2 layers and add the third later.\u003c\/p\u003e\n\u003ch4\u003eWhat equipment do I need to use this kit?\u003c\/h4\u003e\n\u003cp\u003eAn electrospinning system with one syringe pump per layer (2 or 3 pumps) and a high-voltage supply. The kit is compatible with all Linari systems (Starter Kit, RT Collector, Easy Drum, RT Advanced) and with third-party setups via standard Luer Lock connections.\u003c\/p\u003e\n\u003ch4\u003eHow does it differ from the sealed coaxial needles?\u003c\/h4\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.linarinanotech.com\/products\/sealed-coaxial-needles\"\u003eSealed coaxial needles\u003c\/a\u003e are compact welded units with fixed geometry, ideal for parallel high-productivity arrays. The modular kit costs more but offers interchangeable tips, full disassembly for cleaning, and diameter changes at any time.\u003c\/p\u003e","brand":"Linari Nanotech","offers":[{"title":"2 Layers","offer_id":31191763943504,"sku":"BI-COAX-L2KIT","price":3207.35,"currency_code":"EUR","in_stock":true},{"title":"3 Layers","offer_id":31191764009040,"sku":"BI-COAX-3LKIT","price":4728.8,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0255\/7109\/8704\/products\/Product_0037_CoaxialNeedleKIT1.png?v=1575366999"},{"product_id":"sealed-coaxial-needles","title":"Sealed Coaxial Needles – AISI 316, 2 or 3 Layers","description":"\u003cp\u003eForget compromises: the ideal solution for \u003cstrong\u003ecore-shell electrospinning\u003c\/strong\u003e with any type of polymer, even in the most corrosive solvents.\u003cbr\u003e\u003cstrong\u003eSuitable for all electrospinning systems.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eA NEEDLE FOR SPINNING TWO OR MORE SOLUTIONS SIMULTANEOUSLY\u003c\/h2\u003e\n\u003cp\u003eThe sealed coaxial needles are manufactured in AISI 316 stainless steel and are assembled entirely by a laser welding process to guarantee maximum geometric precision and high levels of cleanliness, eliminating any risk of contaminating the solutions.\u003c\/p\u003e\n\u003cp\u003eTwo standard versions are available, with two or three concentric layers, which can be customized upon request.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStandard dimensions (2 layers):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInner needle: G21\u003c\/li\u003e\n\u003cli\u003eOuter needle: G15\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eStandard dimensions (3 layers):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInner needle: G21\u003c\/li\u003e\n\u003cli\u003eMiddle needle: G15\u003c\/li\u003e\n\u003cli\u003eOuter needle: G11\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBUYING MORE THAN ONE? SAVE WITH THE 3-PACK\u003c\/h3\u003e\n\u003cp\u003eFor parallel multi-needle arrays or to keep spares at hand, the \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/sealed-coaxial-needles-3pcs-set\"\u003e\u003cstrong\u003eSealed Coaxial Needles 3-Pack\u003c\/strong\u003e\u003c\/a\u003e offers the same needles at a lower unit price — you save up to 9% compared to three single needles.\u003c\/p\u003e\n\u003ch3\u003eWHAT ADVANTAGES DO YOU GET FROM USING SEALED COAXIAL NEEDLES?\u003c\/h3\u003e\n\u003cp\u003eWith coaxial needles you gain the ability to \u003cstrong\u003espin two or more polymers simultaneously within the same fiber\u003c\/strong\u003e, producing fibers with an \u003cstrong\u003einner core and outer shell\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis is useful when a single material would force a compromise between two properties — for example, one material offers the desired mechanical strength, while a different material shows a better degradation rate.\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg alt=\"Core-shell fiber with inner core produced by coaxial electrospinning\" src=\"https:\/\/ucarecdn.com\/25f398a8-822c-426e-bdf2-b01d70025a8e\/-\/format\/auto\/-\/preview\/480x480\/-\/quality\/lighter\/fiber-inner-core.jpg\"\u003e\u003c\/div\u003e\n\u003cdiv\u003eThanks to the manufacturing material, it is possible to spin \u003cstrong\u003eany type of polymer\u003c\/strong\u003e, even with the most corrosive solvents, at temperatures \u003cstrong\u003eup to 120 °C\u003c\/strong\u003e in the standard configuration.\u003c\/div\u003e\n\u003cp\u003eThese needles are very compact and make it possible to create \u003cstrong\u003ehigh-productivity configurations\u003c\/strong\u003e: they can be \u003cstrong\u003eassembled in parallel\u003c\/strong\u003e up to tens of units thanks to a simple, solid mechanical structure and the distribution of solutions through standard Luer-UNF connections.\u003c\/p\u003e\n\u003cp\u003eThe rear threaded hole permits both fastening to the support structure and a \u003cstrong\u003estable connection\u003c\/strong\u003e of the high voltage.\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg alt=\"Sealed coaxial electrospinning needle in AISI 316 stainless steel\" src=\"https:\/\/ucarecdn.com\/536f1cdd-ea0b-4eaf-9315-edf57eb48279\/-\/format\/auto\/-\/preview\/3000x3000\/-\/quality\/lighter\/sealed-coaxial-needle.jpg\"\u003e\u003c\/div\u003e\n\u003ch3\u003eLOOKING FOR A MORE VERSATILE SOLUTION?\u003c\/h3\u003e\n\u003cp\u003eIn our \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/coaxial-needle-kit\"\u003eModular Coaxial Needle Kit\u003c\/a\u003e, every concentric needle is independent, so it can be equipped with a different diameter and supplied with solutions of different materials through standard Luer Lock connections.\u003c\/p\u003e\n\u003cdiv\u003e\n\u003ca class=\"img-holder\" href=\"https:\/\/www.linarinanotech.com\/products\/coaxial-needle-kit\"\u003e\u003cimg alt=\"Modular coaxial needle kit with dielectric support and Luer connectors\" src=\"https:\/\/www.linarinanotech.com\/cdn\/shop\/products\/Product_0038_CoaxialNeedleKIT_1024x1024.png?v=1575367010\" width=\"540\" height=\"540\"\u003e\u003c\/a\u003e\n\u003cdiv\u003e\u003ca href=\"https:\/\/www.linarinanotech.com\/products\/coaxial-needle-kit\"\u003eMODULAR COAXIAL NEEDLE KIT\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eLOOKING FOR A COMPLETE SET OF SEALED COAXIAL NEEDLES?\u003c\/h3\u003e\n\u003cp\u003eA complete set is available as a kit at a special price.\u003c\/p\u003e\n\u003cdiv\u003e\n\u003ca class=\"img-holder\" href=\"https:\/\/www.linarinanotech.com\/products\/sealed-coaxial-needle-kit\"\u003e\u003cimg alt=\"Sealed coaxial needle kit\" src=\"https:\/\/www.linarinanotech.com\/cdn\/shop\/products\/sealed-coaxial-needles-kit_1024x1024.png?v=1630334282\" width=\"540\" height=\"540\"\u003e\u003c\/a\u003e\n\u003cdiv\u003e\u003ca href=\"https:\/\/www.linarinanotech.com\/products\/sealed-coaxial-needle-kit\"\u003eSEALED COAXIAL NEEDLE KIT\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eFREQUENTLY ASKED QUESTIONS\u003c\/h3\u003e\n\u003ch4\u003eWhat is the difference between sealed and modular coaxial needles?\u003c\/h4\u003e\n\u003cp\u003eSealed needles are laser-welded single pieces: compact, lower cost (from €151.80) and ideal for parallel arrays, but with fixed geometry. The \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/coaxial-needle-kit\"\u003emodular kit\u003c\/a\u003e offers interchangeable tips and full disassembly for cleaning.\u003c\/p\u003e\n\u003ch4\u003eDo sealed coaxial needles work with non-Linari electrospinning systems?\u003c\/h4\u003e\n\u003cp\u003eYes. Solutions are fed through standard Luer-UNF connections and the rear threaded hole fits standard supports, so they can be used with any electrospinning setup with at least two syringe pumps.\u003c\/p\u003e\n\u003ch4\u003eWhich gauge configuration should I choose?\u003c\/h4\u003e\n\u003cp\u003eThe 2-layer version (G21 inner \/ G15 outer) covers most core-shell applications. Choose the 3-layer version (G21\/G15\/G11) for triaxial fibers or when an additional protective or functional layer is required. Custom geometries are available on request.\u003c\/p\u003e\n\u003ch4\u003eIs there a discount for buying multiple needles?\u003c\/h4\u003e\n\u003cp\u003eYes — the \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/sealed-coaxial-needles-3pcs-set\"\u003e3-pack\u003c\/a\u003e saves you up to 9% compared to buying three single needles: ideal for parallel configurations and spares.\u003c\/p\u003e","brand":"Linari Nanotech","offers":[{"title":"2 Layers","offer_id":31397567660112,"sku":"BI-COAX-2DISP","price":151.8,"currency_code":"EUR","in_stock":true},{"title":"3 Layers","offer_id":31397567692880,"sku":"BI-COAX-3DISP","price":235.75,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0255\/7109\/8704\/products\/Product_0012_SealedCoaxi.png?v=1584982117"},{"product_id":"dielectric-support","title":"Dielectric Needle Support – Adjustable, for Electrospinning","description":"\u003cp\u003eThe dielectric support is used to freely position metal needles connected to high voltage inside the electrospinning chamber. Needles are fastened to the scrolling and rotating cursor along the vertical bar.\u003c\/p\u003e\n\u003ch2\u003eFREELY POSITION YOUR NEEDLES INSIDE THE ELECTROSPINNING CHAMBER\u003c\/h2\u003e\n\u003cp\u003eThe support is composed of a base and a black PVC cursor joined by a rigid, vertical, cylindrical bar in glass-fiber-reinforced composite material.\u003c\/p\u003e\n\u003cp\u003eThe cursor can \u003cstrong\u003escroll and rotate along the vertical bar\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe needles — either two \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/sealed-coaxial-needles\"\u003esealed coaxial needles\u003c\/a\u003e (two or three layers) or a single \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/coaxial-needle-kit\"\u003emodular coaxial needle\u003c\/a\u003e — are fastened to the cursor. A version supporting up to two metal needles with Luer connector is also available. All needles installed on the dielectric support must be connected to their syringes by flexible tubes.\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg alt=\"Sealed coaxial needle on dielectric support connected to syringe pumps\" src=\"https:\/\/ucarecdn.com\/2c0eb4f0-968a-4ce1-8c27-40d6cb9f62d7\/-\/format\/auto\/-\/preview\/480x480\/-\/quality\/lighter\/sealed-coaxal-needle-and-pumps.jpg\"\u003e\u003c\/div\u003e\n\u003ch3\u003eLOOKING FOR A COMPLETE SET?\u003c\/h3\u003e\n\u003cp\u003eIn our \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/coaxial-needle-kit\"\u003eModular Coaxial Needle Kit\u003c\/a\u003e, every concentric needle is independent, so it can be equipped with a different diameter and supplied with solutions of different materials through standard Luer Lock connections. Two standard versions of the \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/sealed-coaxial-needle-kit\"\u003eSealed Coaxial Needle Kit\u003c\/a\u003e are also available, with two or three concentric layers, customizable upon request.\u003c\/p\u003e\n\u003ch3\u003eDIELECTRIC SUPPORT SIZE\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBase dimensions (L x W x T): 100 x 75 x 15 mm\u003c\/li\u003e\n\u003cli\u003eVertical support stroke: 200 mm\u003c\/li\u003e\n\u003cli\u003eVertical rod diameter: 10 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/share.hsforms.com\/1_sSlpqolTNiaPOFBtSSf0A3llre\" target=\"_blank\"\u003eDownload Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFREQUENTLY ASKED QUESTIONS\u003c\/h3\u003e\n\u003ch4\u003eWhy do I need a dielectric support instead of a metal one?\u003c\/h4\u003e\n\u003cp\u003eThe needles carry high voltage (up to 60 kV): a dielectric structure avoids field distortion and discharge paths, keeping the electric field symmetric around the needle tip for stable Taylor cone formation.\u003c\/p\u003e\n\u003ch4\u003eIs it included in the coaxial needle kits?\u003c\/h4\u003e\n\u003cp\u003eYes, one dielectric support is included in both the 2-layer and 3-layer \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/coaxial-needle-kit\"\u003eModular Coaxial Needle Kit\u003c\/a\u003e. Buy it separately for additional needle positions or multi-needle setups.\u003c\/p\u003e","brand":"Linari Nanotech","offers":[{"title":"Default Title","offer_id":31191844225104,"sku":"BI-COAX-SUP","price":240.35,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0255\/7109\/8704\/products\/DielectricSupport.png?v=1575367055"},{"product_id":"sealing-kit","title":"Sealing Kit for Coaxial Needles – NBR O-Rings, 5 pcs","description":"\u003cp\u003eSealing kit for coaxial electrospinning needles.\u003cbr\u003eO-ring seal kit (\u003cstrong\u003e5 pieces\u003c\/strong\u003e) for tips and bases of both the two- and three-layer \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/base\"\u003emodular coaxial needles\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSUITABLE FOR MODULAR COAXIAL NEEDLES\u003c\/strong\u003e\u003cbr\u003eThe O-ring seals included in this kit (5 pieces) are made of nitrile rubber (NBR).\u003c\/p\u003e\n\u003ch3\u003eFREQUENTLY ASKED QUESTIONS\u003c\/h3\u003e\n\u003ch4\u003eWhen should I replace the O-rings?\u003c\/h4\u003e\n\u003cp\u003eReplace them whenever you notice fluid seepage between tip and base, and as preventive maintenance after intensive use or exposure to aggressive solvents. Keeping a spare kit avoids downtime.\u003c\/p\u003e\n\u003ch4\u003eAre these seals compatible with sealed coaxial needles?\u003c\/h4\u003e\n\u003cp\u003eNo — \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/sealed-coaxial-needles\"\u003esealed coaxial needles\u003c\/a\u003e are laser-welded and have no serviceable seals. This kit is for the \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/base\"\u003emodular coaxial needle\u003c\/a\u003e bases and \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/tip\"\u003etips\u003c\/a\u003e.\u003c\/p\u003e","brand":"Linari Nanotech","offers":[{"title":"Default Title","offer_id":31191856054352,"sku":"BI-COAX-SEAL","price":16.1,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0255\/7109\/8704\/products\/Product_0011_Sealing-kit.png?v=1575368500"},{"product_id":"sealed-coaxial-needle-kit","title":"Sealed Coaxial Needle Kit – Complete Set, 2 or 3 Layers","description":"\u003cp\u003eOur Sealed Coaxial Needle Kit is the ideal solution for \u003cstrong\u003ecore-shell electrospinning\u003c\/strong\u003e with \u003cstrong\u003eany type of polymer\u003c\/strong\u003e, even in the most corrosive solvents — a complete, ready-to-use set at an accessible price.\u003c\/p\u003e\n\u003ch2\u003eSUITABLE FOR CORE-SHELL ELECTROSPINNING\u003c\/h2\u003e\n\u003cp\u003eAll our needles are manufactured in AISI 316 stainless steel and assembled entirely by a laser welding process. Thanks to the manufacturing material, \u003cstrong\u003eit is possible to spin any type of polymer\u003c\/strong\u003e at temperatures \u003cstrong\u003eup to 120 °C\u003c\/strong\u003e in the standard configuration.\u003c\/p\u003e\n\u003ch3\u003eWHAT ADVANTAGES DO YOU GET FROM USING THIS KIT?\u003c\/h3\u003e\n\u003cp\u003eWith coaxial needles you gain the ability to spin two or more polymers simultaneously within the same fiber, producing fibers with an \u003cstrong\u003einner core and outer shell\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg alt=\"Core-shell fibers produced by coaxial electrospinning\" src=\"https:\/\/ucarecdn.com\/ac602329-9921-4a8d-a926-679b2ce577c4\/-\/format\/auto\/-\/preview\/480x480\/-\/quality\/lighter\/core-shell-fibers.png\"\u003e\u003c\/div\u003e\n\u003cp\u003eThis is useful when a single material would force a compromise between two properties — for example, one material offers the desired mechanical strength, while a different material shows a better degradation rate.\u003c\/p\u003e\n\u003cp\u003eTwo standard versions are available, with two or three concentric layers, customizable upon request.\u003cbr\u003eThese needles are very compact and make it possible to create high-productivity configurations: they can be assembled in parallel up to tens of units thanks to a simple, solid mechanical structure and the distribution of solutions through Luer-UNF connections.\u003c\/p\u003e\n\u003cp\u003eThe rear threaded hole permits both fastening to the support structure and a stable connection of the high voltage.\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg alt=\"Sealed coaxial electrospinning needle\" src=\"https:\/\/ucarecdn.com\/70ee6fd6-2003-4809-849d-1482dde23aa5\/-\/format\/auto\/-\/preview\/480x480\/-\/quality\/lighter\/sealed-coaxial-needle.jpg\"\u003e\u003c\/div\u003e\n\u003ch3\u003eLOOKING FOR A MORE VERSATILE SOLUTION?\u003c\/h3\u003e\n\u003cp\u003eIn our \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/coaxial-needle-kit\"\u003eModular Coaxial Needle Kit\u003c\/a\u003e, every concentric needle is independent, so it can be equipped with a \u003cstrong\u003edifferent diameter\u003c\/strong\u003e and supplied with solutions of different materials through standard Luer Lock connections.\u003c\/p\u003e\n\u003ch3\u003ePRODUCTS INCLUDED\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.linarinanotech.com\/products\/sealed-coaxial-needles\"\u003eSealed Coaxial Needles\u003c\/a\u003e (2 or 3 layers)\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.linarinanotech.com\/products\/dielectric-support\"\u003eDielectric Support\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.linarinanotech.com\/products\/coaxial-needles-adapter\"\u003eLuer-UNF Fittings\u003c\/a\u003e: 2 pcs (2 layers) \/ 3 pcs (3 layers)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSTANDARD DIMENSIONS\u003c\/h3\u003e\n\u003ch4\u003eInner needle: G21\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eOD: 0.83 mm\u003c\/li\u003e\n\u003cli\u003eID: 0.51 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eMiddle needle: G15\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eOD: 1.83 mm\u003c\/li\u003e\n\u003cli\u003eID: 1.37 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eOuter needle: G11\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eOD: 3.05 mm\u003c\/li\u003e\n\u003cli\u003eID: 2.39 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCOMPATIBILITY\u003c\/h3\u003e\n\u003cp\u003eIt can be integrated on machines that have a number of syringe pumps \u003cstrong\u003eequal to the number of layers used\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg alt=\"Sealed coaxial needle kit with syringe pumps\" src=\"https:\/\/ucarecdn.com\/ed51232e-1c1f-40ea-a9bd-760db92d9bc2\/-\/format\/auto\/-\/preview\/480x480\/-\/quality\/lighter\/sealed-coaxial-needle-with-pumps.png\"\u003e\u003c\/div\u003e\n\u003ch3\u003eFREQUENTLY ASKED QUESTIONS\u003c\/h3\u003e\n\u003ch4\u003eWhat is the difference between this kit and the Modular Coaxial Needle Kit?\u003c\/h4\u003e\n\u003cp\u003eThis kit uses laser-welded \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/sealed-coaxial-needles\"\u003esealed needles\u003c\/a\u003e with fixed geometry (G21\/G15\/G11) — compact, robust and significantly more affordable. The \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/coaxial-needle-kit\"\u003emodular kit\u003c\/a\u003e offers interchangeable tips and full disassembly, at a higher price. If you are starting with core-shell electrospinning, this sealed kit is the most cost-effective entry point.\u003c\/p\u003e\n\u003ch4\u003eCan I use this kit with a non-Linari electrospinning system?\u003c\/h4\u003e\n\u003cp\u003eYes. The needles connect through standard Luer-UNF fittings and the dielectric support is free-standing, so the kit works with any electrospinning setup that has one syringe pump per layer and a high-voltage supply.\u003c\/p\u003e\n\u003ch4\u003eIs everything I need included?\u003c\/h4\u003e\n\u003cp\u003eThe kit includes the sealed coaxial needle, the dielectric support and the Luer-UNF fittings. You additionally need syringes, \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/pvc-tubing\"\u003eLuer Lock tubing\u003c\/a\u003e and your electrospinning system with pumps and high-voltage supply.\u003c\/p\u003e","brand":"Linari Nanotech","offers":[{"title":"2 Layers","offer_id":31826663178320,"sku":"BI-COAX-2DISP-KIT","price":458.85,"currency_code":"EUR","in_stock":true},{"title":"3 Layers","offer_id":31826663211088,"sku":"BI-COAX-3DISP-KIT","price":554.3,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0255\/7109\/8704\/products\/sealed-coaxial-needles-kit.png?v=1630334282"},{"product_id":"sealed-coaxial-needles-3pcs-set","title":"Sealed Coaxial Needles – 3-Pack, Save up to 9%","description":"\u003cp\u003eForget compromises: the ideal solution for \u003cstrong\u003ecore-shell electrospinning\u003c\/strong\u003e with any type of polymer, even in the most corrosive solvents. Suitable for all electrospinning systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e3-pack of identical sealed coaxial needles — the convenient choice for parallel multi-needle configurations and for keeping spares at hand, at a lower unit price than buying single needles.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eSAVE WITH THE 3-PACK\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 layers:\u003c\/strong\u003e €419.75 for 3 needles (€139.92 each) instead of €455.40 — \u003cstrong\u003eyou save €35.65 (~8%)\u003c\/strong\u003e vs the \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/sealed-coaxial-needles\"\u003esingle needle\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3 layers:\u003c\/strong\u003e €645.15 for 3 needles (€215.05 each) instead of €707.25 — \u003cstrong\u003eyou save €62.10 (~9%)\u003c\/strong\u003e vs the single needle\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eA NEEDLE FOR SPINNING TWO OR MORE SOLUTIONS SIMULTANEOUSLY\u003c\/h2\u003e\n\u003cp\u003eThe sealed coaxial needles are manufactured in AISI 316 stainless steel and assembled entirely by a laser welding process to guarantee maximum geometric precision and high levels of cleanliness, eliminating any risk of contaminating the solutions.\u003c\/p\u003e\n\u003cp\u003eTwo standard versions are available, with two or three concentric layers, customizable upon request.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStandard dimensions (2 layers):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInner needle: G21\u003c\/li\u003e\n\u003cli\u003eOuter needle: G15\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eStandard dimensions (3 layers):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInner needle: G21\u003c\/li\u003e\n\u003cli\u003eMiddle needle: G15\u003c\/li\u003e\n\u003cli\u003eOuter needle: G11\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWHAT ADVANTAGES DO YOU GET FROM USING SEALED COAXIAL NEEDLES?\u003c\/h3\u003e\n\u003cp\u003eWith coaxial needles you gain the ability to \u003cstrong\u003espin two or more polymers simultaneously within the same fiber\u003c\/strong\u003e, producing fibers with an \u003cstrong\u003einner core and outer shell\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis is useful when a single material would force a compromise between two properties — for example, one material offers the desired mechanical strength, while a different material shows a better degradation rate.\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg alt=\"Core-shell fiber with inner core produced by coaxial electrospinning\" src=\"https:\/\/ucarecdn.com\/25f398a8-822c-426e-bdf2-b01d70025a8e\/-\/format\/auto\/-\/preview\/480x480\/-\/quality\/lighter\/fiber-inner-core.jpg\"\u003e\u003c\/div\u003e\n\u003cdiv\u003eThanks to the manufacturing material, it is possible to spin \u003cstrong\u003eany type of polymer\u003c\/strong\u003e, even with the most corrosive solvents, at temperatures \u003cstrong\u003eup to 120 °C\u003c\/strong\u003e in the standard configuration.\u003c\/div\u003e\n\u003cp\u003eThese needles are very compact and make it possible to create \u003cstrong\u003ehigh-productivity configurations\u003c\/strong\u003e: they can be \u003cstrong\u003eassembled in parallel\u003c\/strong\u003e up to tens of units — which is exactly where this 3-pack comes in — thanks to a simple, solid mechanical structure and the distribution of solutions through standard Luer-UNF connections.\u003c\/p\u003e\n\u003cp\u003eThe rear threaded hole permits both fastening to the support structure and a \u003cstrong\u003estable connection\u003c\/strong\u003e of the high voltage.\u003c\/p\u003e\n\u003cdiv\u003e\u003cimg alt=\"Sealed coaxial electrospinning needle in AISI 316 stainless steel\" src=\"https:\/\/ucarecdn.com\/536f1cdd-ea0b-4eaf-9315-edf57eb48279\/-\/format\/auto\/-\/preview\/3000x3000\/-\/quality\/lighter\/sealed-coaxial-needle.jpg\"\u003e\u003c\/div\u003e\n\u003ch3\u003eLOOKING FOR A MORE VERSATILE SOLUTION?\u003c\/h3\u003e\n\u003cp\u003eIn our \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/coaxial-needle-kit\"\u003eModular Coaxial Needle Kit\u003c\/a\u003e, every concentric needle is independent, so it can be equipped with a different diameter and supplied with solutions of different materials through standard Luer Lock connections.\u003c\/p\u003e\n\u003ch3\u003eLOOKING FOR A COMPLETE SET?\u003c\/h3\u003e\n\u003cp\u003eThe \u003ca title=\"Sealed Coaxial Needle Kit\" href=\"https:\/\/www.linarinanotech.com\/products\/sealed-coaxial-needle-kit\"\u003eSealed Coaxial Needle Kit\u003c\/a\u003e — needle, dielectric support and fittings — is available at a special price.\u003c\/p\u003e\n\u003ch3\u003eFREQUENTLY ASKED QUESTIONS\u003c\/h3\u003e\n\u003ch4\u003eHow much do I save compared to buying single needles?\u003c\/h4\u003e\n\u003cp\u003eAbout 8% on the 2-layer version (€35.65) and about 9% on the 3-layer version (€62.10) compared to buying three \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/sealed-coaxial-needles\"\u003esingle sealed coaxial needles\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch4\u003eWhy would I need three identical coaxial needles?\u003c\/h4\u003e\n\u003cp\u003eTwo common cases: \u003cstrong\u003eparallel arrays\u003c\/strong\u003e to multiply throughput (each needle fed by its own pump lines) and \u003cstrong\u003econtinuity of operation\u003c\/strong\u003e — keeping cleaned spares ready so production or experiments never stop.\u003c\/p\u003e\n\u003ch4\u003eAre the needles in the pack identical to the single product?\u003c\/h4\u003e\n\u003cp\u003eYes — same AISI 316 laser-welded needles, same geometries (G21\/G15 for 2 layers, G21\/G15\/G11 for 3 layers) as the \u003ca href=\"https:\/\/www.linarinanotech.com\/products\/sealed-coaxial-needles\"\u003esingle sealed coaxial needle\u003c\/a\u003e. Only the pack size and unit price change.\u003c\/p\u003e","brand":"Linari Nanotech","offers":[{"title":"2 Layers","offer_id":32314358497360,"sku":"BI-COAX-2DISP-3PCS","price":419.75,"currency_code":"EUR","in_stock":true},{"title":"3 Layers","offer_id":32314351222864,"sku":"BI-COAX-3DISP-3PCS","price":645.15,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0255\/7109\/8704\/products\/SealedCoaxialNeedle_BI-COAX-2DISP.png?v=1588599904"}],"url":"https:\/\/www.linarinanotech.com\/collections\/coaxial-electrospinning-needles.oembed","provider":"Linari Nanotech","version":"1.0","type":"link"}