Spare tube assembly, ACTI-VOC Back Catalog number: SERZ-1097 Manufacturer: MARKES INTERNATIONAL LIMITED Availability: In the manufacturer's stock Price on request - + Recommended U-T15ATA-2S UNITY 2 Cold trap, TO-15/TO-17 Air Toxics C2/3 Price on request OST-201-0246 Screw caps for screwthread tubes GL14, bore 8mm Price on request U-T7EMP-2S Empty cold trap for UNITY series 2 Price on request