HandyTube’s Ultra-Small Diameter capillary tubing (USD™) is crucial to the performance of High Performance and Ultra-Performance Liquid Chromatography (HPLC and UPLC) equipment. We now offer USD™ capillary tubing with outer diameters less than 1/16th inch (1.59 mm). Seamless USD™ capillary tubing increases sampling efficiencies.

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