Diesel Detector TubesDetection Range: 0.1 – 5mg/L Uniphos P/N SDL-4 Gas Detector Tubes10 tubes, 10 tests per box Diesel Gas Detector Tubes. Measuring Range: 0.1 – 5mg/L. Uniphos P/N SDL-4 | Instrument Depot 800-731-7071 ** BUY NOW **