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 SERLFP-5003 Spare back pressure adapter, ACTI-VOC Price on request M-TCN04 O-Ring, size 007, and spacer,pk 6 Price on request T-2HD CW agents (in particular HD) cold trap, TT24-7 Price on request