Tedlar PVF Gas Sampling Bag with PP valve, 5L, 3/16'' OD (4.76mm) Back Catalog number: TDL71_5L Availability: In the manufacturer's stock Price on request - + Recommended RMK-0020 Routine Maintenance Kit: Tube conditioner (TC-20) Price on request M-MCHOR250HT O-Ring, micro-chamber pan seal,pk 4 Price on request HEDPOL32_2L Polyester gas sampling bag with PTFE dual-valve, 2L Price on request