Tube Holder Quad Variable Flow, only Back Catalog number: 800075 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800259 Single Tube Holder Kit, 7-10 x 110mm Price on request 811-9974-50 Sorbent Tube, XAD-2, 8X110, 150/75, 50/BX Price on request 143SA Xylene (5-1000 ppm) Gas detector tubes, pk/10 Price on request