Tedlar PVF Gas Sampling Bags with PTFE straight On/Off valve, 2L Back Catalog number: TDL31_2L Availability: In the manufacturer's stock Price on request - + Recommended FEP32_2L FEP gas sampling bag with PTFE dual-valve, 2L Price on request U-ULKIT TD automation/ULTRA-xr starter kit Price on request 1970-0011-R O-RING -011 .301 ID X .070 W Each Price on request