Tube Holder Single Variable Flow, only Back Catalog number: 800072 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9970-50 Sorbent Tube, Silica (Spec Clean), 7X110, 50/BX Price on request 800254 Single Variable Flow Kit, 5 x 150mm [Kitagawa TWA Price on request 800066-10 Tube Holder Collar Clip, for 1/4" OD, 1/8" ID Tubi Price on request