Tedlar PVF Gas Sampling Bags with PTFE straight On/Off valve, 5L Back Catalog number: TDL31_5L 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 C-CL010 Penclips, pk10 Price on request U-COV100 O-Ring, low-emission, size 010, pk/100 Price on request