Polyester gas sampling bag with PTFE dual-valve, 2L Back Catalog number: POL32_2L Availability: In the manufacturer's stock Price on request - + Recommended M-MCHOR O-Ring, micro-chamber pan seal, for M-CTE120I,pk 6 Price on request P-CPS20 Dowty seals, for VOC-Mole cap assembly,pk 20 Price on request C-TAGKT TubeTAG starter kit (for SS tubes) Price on request