Measuring Soot in Diesel Lubricating Oil with the InfraCal Soot Meter

The InfraCal soot meter is a tool widely used in lubrication oil and engine testing laboratories. It provides an easy-to-use ASTM approved analysis technique for the percentage of soot in diesel engine lubricating oils. The soot meter is a user-friendly solution for a speedy test of percent soot.

The results can be compared against thermogravimetric analysis (TGA) reference technique and FTIR techniques. The soot meter is also suitable for a wide variety of applications.

Samples are applied on scratch-resistant cubic zirconia attenuated total reflectance (ATR) sample plate and can be easily cleaned with a paper towel or cloth. There is no need for solvents which require special ventilation or costly waste disposal rendering cells difficult to clean. The analysis can be performed by non-technical personnel without the need for any formal training.

Key Features

The main features of the InfraCal soot meter are:

  • Complies with ASTM method D7686
  • No dilution or sample preparation
  • One-step measurement of soot levels up to 15%
  • Speedy analysis within 30sec/sample


The key areas of applications include:

  • On-board-ship
  • Power generation stations
  • Oil testing labs to realize comparable results to TGA or FTIR in a fraction of the time
  • Construction or mining sites
  • Engine test labs to achieve on-the-spot assessment of the engine test progress
  • Fleet maintenance shops for checking soot level to identify exactly when to schedule oil changes

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