Polyester gas sampling bag with PTFE dual-valve, 5L Back Catalog number: HEDPOL32_5L Availability: In the manufacturer's stock Price on request - + Recommended M-MCHOR250 O-Ring, micro-chamber pan seal,pk 4 Price on request M-DSKPF Sample disc, 1.0mm thickness, PTFE,pk 6 Price on request M-MCTOP250I Removable lids for M-CTE250I, inert,pk 4 Price on request