glass vials with caps in clear for HPLC sampling for sale Aijiren. Aijiren 4 mL, 12 mL, 22 mL, and 40 mL storage vial kits contain screw top vials constructed from Type 1 borosilicate clear or amber glass, open caps with PTFE silicone septa, or PTFE lined storage caps that offer broad chemical resistance.