BS ISO 4407:2002
Current
The latest, up-to-date edition.
Hydraulic fluid power. Fluid contamination. Determination of particulate contamination by the counting method using an optical microscope
Hardcopy , PDF
English
05-21-2002
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Counting principle
5 Apparatus
6 Reagent and chemicals
6.1 Reagent and rinsing and cleaning chemicals
6.2 Liquids for transparentizing the membrane filter
(transmitted-light method)
7 Glassware cleaning procedure
8 Calibration procedures
8.1 Microscope calibration
8.2 Determination of Effective Filtration Area (EFA)
9 Membrane filter preparation
9.1 Sample preparation
9.2 Blank analysis
9.3 Separation of contaminants by vacuum filtration
9.4 Evaluation of suitability for counting
9.5 Mounting of membrane filters for observation under
transmitted light
10 Particle sizing and counting procedure
10.1 Particle sizing
10.2 Selection of nominal magnification
10.3 Statistical counting procedure
10.4 Calculation of total count
10.5 Verification of data
11 Expression of results
12 Identification statement (Reference to this International
Standard)
Bibliography
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