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 DEV31_5L DEVEX gas sampling bag, stopcock straight valve, 5L Price on request M-SPGSC-250 Adjustable sprung spacer, for M-CTE250I,pk 4 Price on request C-VAC-FULL-ARR-KI Vacuum SPME Arrow Full Starter Kit Price on request