Tedlar PVF Gas Sampling Bags with PTFE straight On/Off valve, 5L Back Catalog number: HEDTDL31_5L Availability: In the manufacturer's stock Price on request - + Recommended U-T13DHS-2S DHS application cold trap, UNITY 2/xr andTD-100/xr Price on request HEDFEP32_5L FEP gas sampling bag with PTFE dual-valve, 5L Price on request T-3GBGE CW agents cold trap, TT24-7 Price on request