Sorbent Tube, XAD-2, 8X110, 450/225, 20/BX Back Catalog number: 811-9978-20 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800170 Tube Holder Hose Barb Fitting Price on request 143SA Xylene (5-1000 ppm) Gas detector tubes, pk/10 Price on request 800063 Tube Holder Housing End, 1/2" for 5mm OD Price on request