Sorbent Tube, Silica Gel, 8X110, 520/360, 50/BX Back Catalog number: 811-9968-50 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800071-10 Tube Holder Housing End, 5/8", for 1/4" OD, Open E Price on request 800231 Tube Holder Kit, Quad Variable, 6 x 70mm Price on request 800262 Single Tube Holder Kit, 7 x 130mm [Draeger Long T Price on request