Sulphur Dioxide 1-60 ppm Gas Detector Tube, pk/10 Back Catalog number: 103SD Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800063 Tube Holder Housing End, 1/2" for 5mm OD Price on request 800134-10 Tube Holder Collar Clip, for 7/16" OD, 5/16" ID Tubing (Packg of 10) Price on request 800136-10 Tube Holder Collar Clip, for 5/8" OD, 1/2" ID Tubing (Packg of 10) Price on request