Tube Holder Quad Variable Flow, only Back Catalog number: 800075 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9977-20 Sorbent Tube, XAD-2, 6X110, 120/60, 20/BX Price on request 200104-10 Tube Holder Housing, 5 x 150mm, 1/2", S255 [Kitaga Price on request 800259 Single Tube Holder Kit, 7-10 x 110mm Price on request