Sorbent Tube, TenaX, 8X110, 100/50, 50/BX Back Catalog number: 811-9972-50 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9983-50 Sorbent Tube, Porapak-Q 6X110, 150/75, 50/BX Price on request 800231 Tube Holder Kit, Quad Variable, 6 x 70mm Price on request 800064 Tube Holder Housing End, 5/8", for 7-10mm Price on request