Tube Holder Dual Variable Flow, only Back Catalog number: 800073 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9972-50 Sorbent Tube, TenaX, 8X110, 100/50, 50/BX Price on request 800062 Tube Holder Housing End, 1/2" for 6mm OD Price on request 200113-10 Tube Holder Housing, 7-10 x 110mm, 5/8", L240 (Pac Price on request