NEN EN ISO 20843 : 2003
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
PETROLEUM AND RELATED PRODUCTS - DETERMINATION OF PH OF FIRE-RESISTANT FLUIDS WITHIN CATEGORIES HFAE, HFAS AND HFC
24-01-2011
12-01-2013
Foreword
Introduction
1 Scope
2 Normative references
3 Principle
4 Reagents and materials
4.1 Water
4.2 Standard solutions to calibrate the pH meter
4.3 Cleaning reagents
5 Apparatus
5.1 pH meter
5.2 Glass electrode and reference electrode or a
grouped electrode device
5.3 Thermometer
5.4 Analytical balance
6 Sampling
7 Procedure
7.1 Calibration of pH meter
7.2 Measurement of pH
8 Expression of results
9 Precision
9.1 General
9.2 Repeatability
9.3 Reproducibility
10 Test report
Annex ZA (normative) Normative references to international
publications with their relevant European publications
Provides a test method to determine the pH value of non-flammable fluids within categories HFAE, HFAS and HFC, as classified in ISO 6743-4.
| DocumentType |
Standard
|
| PublisherName |
Netherlands Standards
|
| Status |
Withdrawn
|
| Standards | Relationship |
| DIN EN ISO 20843:2011-04 | Identical |
| BS EN ISO 20843:2011 | Identical |
| SN EN ISO 20843:2011 | Identical |
| EN ISO 20843:2011 | Identical |
| UNE-EN ISO 20843:2011 | Identical |
| UNI EN ISO 20843 : 2011 | Identical |
| I.S. EN ISO 20843:2011 | Identical |
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