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 801935 Charcoal Tube, Coconut Shell, Standard, 50/100mg, 6 x 70mm (Packg of 50) Price on request 800142-10 Tube Holder Collar Clip, for 3/8" OD, 1/4" ID Tubing (Packg of 10) Price on request 811-9902-20 Charcoal Tube, Coconut Shell, Large, 200/400mg, 8x110mm, with end caps, 20Pack Price on request