Silica Capillary Tubing

Molex's Silica capillary tubing is ideal for numerous applications throughout the medical and scientific industries, including gas chromatography with tubing and coils; capillary electrophoresis with tubing and windowed capillary; genomics with tubing, arrays, and assemblies for DNA sequencing; and fragment analysis including HID (human identification). Other applications include proteomics with tubing for capillary LC columns, fluid connections, and MS interfacing; microfluidics (including lab-on-a-chip) with tubing for fluid connections between nano-/micro-devices and macro environments; mass-flow control with precision-cut pieces for tightly controlled delivery of gases and fluids; and precision flow cells with custom tubing components for cytometry, liquid chromatography, and capillary electrophoresis.

Polymicro Technologies capillary tubing is available in a wide range of options, from thin-walled polyimide-coated flexible fused silica to thick-walled fused silica or quartz tubes without coating. Flexible synthetic fused silica capillary tubing is manufactured across a range of internal diameters, from less than 1 µm to over 2,000 µm. A standard capillary is fabricated from synthetic fused silica preforms using sophisticated draw towers and following closely controlled manufacturing processes. The outside diameter typically ranges from 90 µm to >3,500 µm. In most applications, an external polymer coating is applied to protect the silica outer surface from abrasion. The coating thickness will depend upon the material and application. Molex Polymicro manufactures the highest-quality fused silica, specialty natural quartz, and doped fused silica capillary.