FEP gas sampling bag with PTFE dual-valve, 5L Back Catalog number: HEDFEP32_5L Availability: In the manufacturer's stock Price on request - + Recommended U-COV03 O-Ring, Size 003, pk 10 Price on request T-6EMP Empty cold trap, TT24-7 Price on request M-TCN04 O-Ring, size 007, and spacer,pk 6 Price on request