Carbon Monoxide 1-50 ppm Gas Detector Tube, pk/10 Back Catalog number: 106SC Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 200102 Tube Holder Housing, 6x70mm, 1/2" OD, S225 Price on request 158S Sensidyne Gas Detector Tubes, Styrene (2.5-300 ppm), pk/10 Price on request 800063 Tube Holder Housing End, 1/2" for 5mm OD Price on request