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 800073 Tube Holder Dual Variable Flow, only Price on request 800138 Tube Holder Adapter for 5/8" Ends Price on request 800249 Tube Holder Kit, Quad Variable (Includes 6x70mm, 7 Price on request