Oil cleanliness is determined and cleanliness classes are assigned according to ISO 4406 and SAE 4059 standards. At OELCHECK we currently use two different types of laser particle counters:
- CINRG APC
- Spectro LNF Q200
Both devices work on the same principle: They detect particles in the oil by means of light blocking, count them and provide cleanliness classes for different particle sizes. In addition, optical particle analysis produces two-dimensional black and white images of individual particles larger than 20 µm in diameter.
However, these particles represent only a minimal proportion of the total particles detected. Yet, in technical specifications for machine oil cleanliness and in standards for lubricants, it is the cleanliness class dominated by particles smaller than 20 µm that is important. This cleanliness class is determined by both methods using the same principle.
By standardising on one type of instrument (CINRG particle counter), we guarantee you even greater precision and comparability of measurement results.
From 1 April 2025, our particle counting analysis kits will be adapted accordingly.
If you have any questions, please contact our team on +49 8034-9047-210 or by email at sales(at)oelcheck.de.