Tedlar PVF Gas Sampling Bag with PTFE dual-valve, 5L Back Catalog number: TDL32_5L Availability: In the manufacturer's stock Price on request - + Recommended U-T9TNX-2S Unity 2/TD-100 Cold trap, Tenax TA Price on request M-TCN04 O-Ring, size 007, and spacer,pk 6 Price on request RMK-0026 Routine Maintenance Kit: Kori-xr Price on request