Tube Holder Quad Variable Flow, only Back Catalog number: 800075 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9966-50 Sorbent Tube, Silica Gel, 6X70, 100/50, 50/BX Price on request 800259 Single Tube Holder Kit, 7-10 x 110mm Price on request 800074 Tube Holder Triple Variable Flow, only Price on request