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Category Archives: Routine Testing

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The Importance of Performing Oil Sampling on a Regular Basis

The Importance of Performing Oil Sampling on a Regular Basis
The importance of oil sampling on a regular basis Routine oil sampling is the key to a successful maintenance program. Oil testing provides essential information to determine the condition of your equipment. Baseline of normal wear can be established during the first few months of a program. As the program matures, only routinely scheduled testing…
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IMPORTANT REPORT UPGRADES – Particle Count Reporting

IMPORTANT REPORT UPGRADES – Particle Count Reporting
IMPORTANT REPORT UPGRADES Particle Count Reporting TestOil has improved our method for reporting particle count limits to make it easier to review and interpret oil analysis test results TestOil has upgraded our oil analysis reports to include the ISO code limits for both the Pore Blockage and the Optical Particle Count tests. The limits will…
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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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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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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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Understanding Particle Counting Methods

Understanding Particle Counting Methods
Understanding Particle Counting Methods Particle counting is considered by many to be one of the most important test for used oil analysis. Many problems can be quickly and easily identified by monitoring the number and size-distribution of particles in an oil sample. The ISO Code is the most common unit of reporting the number of…
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