BS 5540-8:1991
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Evaluating particulate contamination of hydraulic fluids Method of determining the level of contamination (by the counting method using a microscope)
Hardcopy , PDF
21-05-2002
English
20-12-1991
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Committees responsible
National foreword
Introduction
Method
1. Scope
2. Normative references
3. Definitions
4. Counting principle
5. Apparatus
6. Reagents
7. Glassware cleaning procedure
8. Sampling
9. Procedure
10. Microscope calibration
11. Particle counting and sizing procedure
12. Expression and reporting of results
13. Identification statement
Tables
1. Nominal magnifications and optical combinations for
transmitted-light method
2. Nominal magnifications and optical combinations for
incident-light method
3. Particle size ranges and nominal magnifications
Figure
1. Typical counting patterns for grid squares
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 and then counting the number of particles on the surface of the filter using a microscope.
| Committee |
MCE/18
|
| DocumentType |
Standard
|
| Pages |
12
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| Standards | Relationship |
| ISO 4407:2002 | Identical |
| BS 3406-9:1997 | Methods for determination of particle size distribution Recommendations for the filter blockage method (mesh obscuration) |
| ISO 5598:2008 | Fluid power systems and components Vocabulary |
| BS 5540-3:1978 | Specification for evaluating particulate contamination of hydraulic fluids Methods of bottling fluid samples |
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