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 1233 BALLOONS FOR GAS SAMPLING, 4Liters Price on request 1230 BALLOONS FOR GAS SAMPLING, 1Liter Price on request U-T3ATX-2S Air Toxics, C2 - C14 (TO-14), cold trap Price on request