Sorbent Tube, XAD-7, 6X110, 100/50, 50/BX Back Catalog number: 811-9979-50 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800231 Tube Holder Kit, Quad Variable, 6 x 70mm Price on request 800064-10 Tube Holder Housing End, 5/8", for 7-10mm (Packg o Price on request 800249 Tube Holder Kit, Quad Variable (Includes 6x70mm, 7 Price on request