1.5ml vials septa closure types Shimadzu-Aijiren HPLC Vials 1.5mL Clear Glass w/Caps and Pre-Slit Septa, 100/PK. Borosilicate glass (low impurity Type I Class A) with one twist cap and pre-inserted, pre-slit PTFE/silicone septum for ease of sample preparation and autosampler needle penetration.