Triple Variable Tube Holder Kit, 6 x 70mm Back Catalog number: 800230 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9962-50 Sorbent Tube, Chromosorb-102, 8X110, 100/50, 50/BX Price on request 800253 Single Variable Flow Kit, 6 x 70mm (Standard Charc Price on request 800064 Tube Holder Housing End, 5/8", for 7-10mm Price on request