Sorbent Tube, Silica (Spec Clean), 7X110, 50/BX Back Catalog number: 811-9970-50 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800134 Tube Holder Collar Clip, for 7/16" OD, 5/16" ID Tu Price on request 800230 Triple Variable Tube Holder Kit, 6 x 70mm Price on request 800063 Tube Holder Housing End, 1/2" for 5mm OD Price on request