Devex Gas sampling bags 5L, PP screw cap valve, 3/16'' OD (4.76mm) Back Catalog number: HEDDEV71_5L Availability: In the manufacturer's stock Price on request - + Recommended SERZ-1097 Spare tube assembly, ACTI-VOC Price on request M-MCTL250 Sample Pan Removal Tool, for high temp Micro-chamber Price on request U-T9TNX-2S Unity 2/TD-100 Cold trap, Tenax TA Price on request