Tedlar PVF Gas Sampling Bag with PTFE dual-valve, 2L Back Catalog number: TDL32_2L Availability: In the manufacturer's stock Price on request - + Recommended 1233 BALLOONS FOR GAS SAMPLING, 4Liters Price on request U-COV03 O-Ring, Size 003, pk 10 Price on request C-CL010 Penclips, pk10 Price on request