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 800261 Single Tube Holder Kit, 7-10 x 175mm Price on request 800073 Tube Holder Dual Variable Flow, only Price on request 800062 Tube Holder Housing End, 1/2" for 6mm OD Price on request