Effective Validation
Online Measurement is the Most Reliable Practice
Is an ISO 4406 Result reliable?
In the following test we seek to define the best ISO 4406
sampling methodology; using 5 analysis methods.
- Online accountants
- Portable laboratory equipment
- Stationary laboratory equipment
- Laboratory microscope
- Portable microscope
OFFLINE MEASUREMENT WITH CLEANING PROCESS
ONLINE MEASUREMENT
Measuring Highly High Codes
Using recirculation equipment equipped with 2 online ISO 4406 laser
particle counters, with a 0.83 gpm pump and a beta 4>4193 filter,
the reservoir was filled in recirculation mode without filtration.
An ISO code 24/23/18 could be determined, which was ratified in the
other devices without any problem
Conclusion: The veracity of the results was 100% reliable.
Measuring Clean Codes
The fluid was filtered below <9<8<7, and the sample was taken through the counter. The surprise was that despite having repeated the procedure 3 times trying to clean the other equipment as much as possible, we were never able to obtain measurements below 16/14/12; 19/17/13 being the mean of the results of the first measurement procedure.
Conclusion: it was determined that the process of taking the sample and the same laboratory equipment contributed contamination with high results.