Tube Holder Quad Variable Flow, only Back Catalog number: 800075 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9980-50 Sorbent Tube, XAD-7, 6X70, 60/30, 50/BX Price on request 200505 Tubing, 1/8" ID x 1/16" W, Clear PVC, (3 ft) Price on request 800260 Single Tube Holder Kit, 7-10 x 150mm Price on request