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 M-SPGSC-120 Adjustable sprung spacer, for M-CTE120I,pk 6 Price on request T-13PAM Focusing trap, Photochemical Assessment Monitoring Stations (PAMS), for TT24-7 Price on request M-MCTOP250I Removable lids for M-CTE250I, inert,pk 4 Price on request