Sorbent Tube, XAD-7, 6X70, 60/30, 50/BX Back Catalog number: 811-9980-50 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800064-10 Tube Holder Housing End, 5/8", for 7-10mm (Packg o Price on request 800231 Tube Holder Kit, Quad Variable, 6 x 70mm Price on request 800170-10 Tube Holder Hose Barb Fitting (Packg of 10) Price on request