EP Scientific EPA Vials, Borosilicate Glass, with PTFE/Silicone-Lined Cap, Thermo Scientific. Supplier: Thermo Scientific. Description: Vials processed according to Level 1 are certified to meet or exceed EPA standards for volatiles. ,EP140-40CTSCS,EP13920AEPCS,EP141-40AEPCS,EP141-40ACS,EP339-20ACS,EP140-60CCS,EP340-40CDBCS.