Spare tube assembly, ACTI-VOC Back Catalog number: SERZ-1097 Manufacturer: MARKES INTERNATIONAL LIMITED Availability: In the manufacturer's stock Price on request - + Recommended DEV71_10L Devex Gas sampling bags 10L, PP screw cap valve, 3/16'' OD (4.76mm) Price on request P-CPS20 Dowty seals, for VOC-Mole cap assembly,pk 20 Price on request C-TO17KIT TO-17 Starter Kit Price on request