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Category Archives: Routine Testing

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Setting Acid Number and Base Number Limits

Setting Acid Number and Base Number Limits
Setting Acid Number and Base Number Limits There is a rule-of-thumb that oil should be condemned at double its new oil Acid Number, or at half of its new oil Base Number. The problem with this rule is that is has too many exceptions to be valid. Rather than identify the valid instances, it is…
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Variability in Oil Analysis Results

Variability in Oil Analysis Results
Variability in Oil Analysis Results Two consecutive samples, at normal sampling intervals from the same machine, are never expected to have exactly the same results, but occasionally the second set of results appears to have either changed by more than a normal amount, or possibly have shifted in a counter-intuitive direction (i.e. gotten better without…
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Ferrous Wear Concentration versus PQ Index

Ferrous Wear Concentration versus PQ Index
Ferrous Wear Concentration versus PQ Index Since elemental spectroscopy is generally accepted as having lower accuracy measuring wear particles larger than approximately 10 microns, most labs employ some form of simple, large particle analysis specific to ferrous content. Ferrous content is chosen not only because it tends to represent the most common metal in machines,…
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Oil Testing Lab Eurofins TestOil Outlines 6 Ways to Improve Your Program in Datasheet

Oil Testing Lab Eurofins TestOil Outlines 6 Ways to Improve Your Program in Datasheet
World-class oil analysis programs are ever evolving to incorporate new technologies and associated best practices. Because Eurofins TestOil professionals are often on client sites, we have an excellent perspective on this.                 To address some of the ways we think many oil analysis programs could be improved, we created a downloadable datasheet: 6 Ways to…
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Condition Monitoring for Hydraulic Fluid: Testing the Oil and Additives

Condition Monitoring for Hydraulic Fluid: Testing the Oil and Additives
Condition Monitoring for Hydraulic Fluid: Testing the Oil and Additives   Today’s hydraulic oils and their additives are fairly stable, but that doesn’t mean they will stay that way forever—they still need regular testing by an oil analysis lab for a number of factors, including additive depletion.                  According to TestOil Field/Data Analyst Matt McMahon,…
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