Tedlar PVF Gas Sampling Bags with PTFE straight On/Off valve, 2L Back Catalog number: TDL31_2L Availability: In the manufacturer's stock Price on request - + Recommended U-COV1516 Spare O-ring, black, for POD sampler (support body), pk 10 Price on request RMK-0006HT Routine maintenance kit for M-CTE250I Price on request C-HSINS10-6 Agitator spacer for vials, 20mL to 10mL, pk/6 Price on request