Devex Gas sampling bags 5L, PP screw cap valve, 3/16'' OD (4.76mm) Back Catalog number: DEV71_5L Availability: In the manufacturer's stock Price on request - + Recommended M-MCHOR250 O-Ring, micro-chamber pan seal,pk 4 Price on request U-T9TNX-2S Unity 2/TD-100 Cold trap, Tenax TA Price on request M-MCAL20 Disposable dish, alum, 20mL,pk100 Price on request