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 C-POD-S1P0 POD Support Plate, with clip, pk 100 Price on request M-MCHOR O-Ring, micro-chamber pan seal, for M-CTE120I,pk 6 Price on request