cheap HPLC vials sigma aldrich Certified Vial Kit, Low Adsorption (LA), 2 mL, pk of 100 - Sigma-Aldrich Certified Vial Kit, Low Adsorption (LA), 2 mL, pk of 100 volume 2 mL, clear glass vial (with marking spot), natural PTFE/silicone septa (with slit),