U-Tube replacement for P/N 800143 Back Catalog number: 200157 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9972-50 Sorbent Tube, TenaX, 8X110, 100/50, 50/BX Price on request 800134-10 Tube Holder Collar Clip, for 7/16" OD, 5/16" ID Tu Price on request 811-9902-50 Charcoal Tube, Coconut Shell, Large, 200/400mg, 8x Price on request