The InfraCal Soot Meter, Model HATR-CP measures the amount of suspended carbon (soot) in diesel engine lubricating oils. It is factory calibrated to measure levels as high as 12% to 15% in less than 30 seconds without sample preparation or dilution. This easy-to-use fixed filter analyser utilizes infrared absorption spectroscopy which is a well-established laboratory method for evaluating and screening used lubricants. Measurement results are displayed directly as % soot, relative to a standard TGA (thermogravimetric analysis) reference method. It is ideal for oil and engine testing laboratories, as well as by truck, bus or off-highway fleets, onboard ships, and power generation stations.