We are offering a wide range of 1.5ml Autosampler Vials, which are made from clear, Type I borosilicate, 33 expansion glass or amber, Type I, borosilicate, 51 expansion glass, with or without marking spot. Screw Caps are made from Polypropylene. Septa is PTFE/Silicone. Manufactured to Aijiren, Watters ,Varian autosamplers.