Fluode gas sampling bag with PTFE dual-valve, 2L Back Catalog number: HEDFLD32_2L Availability: In the manufacturer's stock Price on request - + Recommended U-COV450 O-Rings, low-emission,pk100 Price on request TDL71_10L Tedlar PVF Gas Sampling Bag with PP valve, 10L, 3/16'' OD (4.76mm) Price on request U-T18325-2S EPA 325 cold trap, UNITY 2/xr and TD-100/xr Price on request