250ul insert for hplc-Aijiren HPLC Vials. Insert, 250UL Insert, Tubular Bottle manufacturer / supplier in China, offering I250 250UL Inserts for 1.5ml Autosampler Vial, 20mm Crimp-Top Blue Magnetic Aluminum Cap, Premium 2ml Autosampler Vial, 11mm Clear HPLC Crimp-Top Vial with Closure and so on. Micro-Inserts--Aijiren HPLC Vials