Tube Holder Single Variable Flow, only Back Catalog number: 800072 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9965-50 Sorbent Tube, Silica Gel, 6X70, 150/75, 50/BX Price on request 800062-10 Tube Holder Housing End, 1/2" for 6mm OD (Packg of Price on request 200112 Tube Holder Housing, 7-10 x 150mm, 5/8", L255 Price on request