U-Tube replacement for P/N 800143 Back Catalog number: 200157 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 158S Sensidyne Gas Detector Tubes, Styrene (2.5-300 ppm), pk/10 Price on request 800259 Single Tube Holder Kit, 7-10 x 110mm Price on request 800260 Single Tube Holder Kit, 7-10 x 150mm Price on request