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 800138 Tube Holder Adapter for 5/8" Ends Price on request 800261 Single Tube Holder Kit, 7-10 x 175mm Price on request 171SC Formaldehyde 0.05-4.0 ppm Gas Detector Tube, pk/10 Price on request