Triple Variable Tube Holder Kit, 6 x 70mm Back Catalog number: 800230 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9969-100 Sorbent Tube, Silica, DNPH, 6X110, 300/150, 100/BX Price on request 200524 Tube Holder Tubing, 3/16" ID x 1/16" W (10 ft) Price on request 800259 Single Tube Holder Kit, 7-10 x 110mm Price on request