Tube Holder Quad Variable Flow, only Back Catalog number: 800075 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 200115 Tube Holder Housing, 7 x 130mm, 5/8", L247 [Draege Price on request 800062-10 Tube Holder Housing End, 1/2" for 6mm OD (Packg of Price on request 811-9969-20 Sorbent Tube, Silica, DNPH, 6X110, 300/150, 20/BX Price on request