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 OST-201-3424 Tube gas sampling 150ml nozzle (GL14), septum Price on request M-TCN04 O-Ring, size 007, and spacer,pk 6 Price on request 1970-0007 O-RING-007 .145 ID x .070 W for LFS-113 (5 Requi Price on request