Tedlar PVF Gas Sampling Bags with PTFE straight On/Off valve, 5L Back Catalog number: TDL31_5L Availability: In the manufacturer's stock Price on request - + Recommended C-HSPH HiSorb handle, for manual probe extraction Price on request M-MCHOR250 O-Ring, micro-chamber pan seal,pk 4 Price on request RMK-0027 Routine Maintenance kit, tube based systems, no co Price on request