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 200505 Tubing, 1/8" ID x 1/16" W, Clear PVC, (3 ft) Price on request 800071 Tube Holder Housing End, 5/8", for 1/4" OD, Open E Price on request 800074 Tube Holder Triple Variable Flow, only Price on request