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BS 5540-7:1991 Evaluating particulate contamination of hydraulic fluids. Method of determining the level of contamination (by the gravimetric method)
standard by BSI Group, 12/20/1991
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Full Description
Method whereby the amount of solid contaminant in a sample of hydraulic fluid can be determined. The principle involves filtering a known volume of the sample under vacuum conditions through a membrane filter. The increase in mass of the filter represents the solid impurity content.Cross References:
BS 5540:Part 3
BS 5540:Part 5
ISO 5598