U-Tube replacement for P/N 800143 Back Catalog number: 200157 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9966-50 Sorbent Tube, Silica Gel, 6X70, 100/50, 50/BX Price on request 801935 Charcoal Tube, Coconut Shell, Standard, 50/100mg, Price on request 800251 Tube Holder Kit, Dual Variable Manifold (Includes Price on request