Single Tube Holder Kit, 7-10 x 175mm Back Catalog number: 800261 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 103SD Sulphur Dioxide 1-60 ppm Gas Detector Tube, pk/10 Price on request 200112-10 Tube Holder Housing, 7-10 x 150mm, 5/8", L255 (pkg of 10) Price on request 800230 Triple Variable Tube Holder Kit, 6 x 70mm Price on request