Sorbent Tube, Porapak-Q 6X110, 150/75, 50/BX Back Catalog number: 811-9983-50 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800073 Tube Holder Dual Variable Flow, only Price on request 800231 Tube Holder Kit, Quad Variable, 6 x 70mm Price on request 200115 Tube Holder Housing, 7 x 130mm, 5/8", L247 Price on request