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 800136 Tube Holder Collar Clip, for 5/8" OD, 1/2" ID Tubi Price on request 800072 Tube Holder Single Variable Flow, only Price on request 800063-10 Tube Holder Housing End, 1/2" for 5mm OD (Packg of Price on request