The Modular Coaxial Needle Kit is the ideal solution for core-shell electrospinning with any type of polymer, even in the most corrosive solvents.Removable and interchangeable tips, easy to clean. IDEAL FOR CORE-SHELL ELECTROSPINNING The modular coaxial needles are made of AISI 316 stainless steel and can be manufactured with tips of different diameters, even beyond the catalog range. Thanks to their stable and accurate structure they can also operate at high temperatures (up to 120 °C) without geometric deformation or leakage of liquids or gas. The minimum configuration requires 2 concentric layers, which can be disassembled or integrated at any time with a third external layer. WHAT ADVANTAGES DO YOU GET FROM USING THIS KIT? 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. All surfaces are designed without dead spaces for easy cleaning. The screw closing system guarantees great simplicity of maintenance. The 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 an electric field of excellent quality for stable and accurate nanofiber production even in difficult conditions. WHY PREFER A MODULAR COAXIAL SYSTEM INSTEAD OF A SEALED ONE? With coaxial needles you gain the ability to spin two or more polymers simultaneously within the same fiber, producing a fiber with an inner core and outer shell. This 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. Compared to the Sealed Coaxial Needle Kit, this modular solution allows changing tips according to your needs, making it a long-lasting investment. WHICH SYSTEMS IS IT COMPATIBLE WITH? The modular coaxial needles can be integrated with the Starter Kit, the RT Collector, the Easy Drum and the RT Advanced, provided the system has a number of syringe pumps equal to the number of concentric layers used. WHICH PRODUCTS ARE INCLUDED? DOUBLE LAYER COAXIAL NEEDLES WITH ADJUSTABLE DIELECTRIC SUPPORT Base of modular coaxial needle, layer 1 – internal: 1 pc. Base of modular coaxial needle, layer 2 – intermediate: 1 pc. Tip, layer 1, gauge 21 (0.83 mm): 1 pc. Tip, layer 2, gauge 15 (1.83 mm): 1 pc. Dielectric support for coaxial needles: 1 pc. Sealing kit for coaxial needles: 1 pc. Female Luer adapter: 2 pcs. TRIPLE LAYER COAXIAL NEEDLES WITH ADJUSTABLE DIELECTRIC SUPPORT AND LUER POWER CONNECTORS Base of modular coaxial needle, layer 1 – internal: 1 pc. Base of modular coaxial needle, layer 2 – intermediate: 1 pc. Base of modular coaxial needle, layer 3 – external: 1 pc. Tip, layer 1, gauge 21 (0.83 mm): 1 pc. Tip, layer 2, gauge 15 (1.83 mm): 1 pc. Tip, layer 3, gauge 11 (3.05 mm): 1 pc. Dielectric support for coaxial needles: 1 pc. Sealing kit for coaxial needles: 1 pc. Luer-UNF adapter: 3 pcs. WATCH THE VIDEO TO FIND OUT HOW TO ASSEMBLE IT SEE VIDEO DISCOVER THE COAXIAL ACCESSORIES BROCHURE FREQUENTLY ASKED QUESTIONS Should I choose the 2-layer or 3-layer kit? Choose 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. What equipment do I need to use this kit? An 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. How does it differ from the sealed coaxial needles? Sealed coaxial needles 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.
