ultra clean EPA vials Chrominex Shimadzu screw cap vial for hplc system-Aijiren HPLC Vials .5mL screw vial kit, including vial, cap and septa, 00/pack Kit part number Vial Vial part number Septa material Cap/Septa part number 220-9733-30 Clear with write on spot 220-9733-25 PTFE/Silicone, ultra-clean 220-9733-27 228-4545-9 Clear