BS ISO 18191:2015
Current
The latest, up-to-date edition.
Water quality. Determination of pHt in sea water. Method using the indicator dye m-cresol purple
Hardcopy , PDF
English
30-09-2015
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Foreword
Introduction
1 Scope
2 Terms and definitions
3 Principle
4 Reagents
5 Apparatus
6 Sampling
7 Procedure
8 Calculation and expression of results
Annex A (informative) - Performance data
Annex B (informative) - Storage stability
Bibliography
Defines a spectrophotometric determination of the pH[t] of sea water on the total hydrogen ion concentration pH scale using the indicator dye m-cresol purple.
| Committee |
EH/3/2
|
| DevelopmentNote |
Supersedes 14/30265651 DC. (09/2015)
|
| DocumentType |
Standard
|
| Pages |
22
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This International Standard specifies a spectrophotometric determination of the pHt of sea water on the total hydrogen ion concentration pH scale using the indicator dye m-cresol purple. The total hydrogen ion concentration, [H+]t, is expressed as moles per kilogram of sea water. The method is suitable for assaying oceanic levels of pHt 7,4 to 8,2 for normal sea water of practical salinity ranging from 20 to 40.
| Standards | Relationship |
| ISO 18191:2015 | Identical |
| ISO 22719:2008 | Water quality Determination of total alkalinity in sea water using high precision potentiometric titration |
| ISO 5667-1:2006 | Water quality Sampling Part 1: Guidance on the design of sampling programmes and sampling techniques |
| ISO 10523:2008 | Water quality — Determination of pH |
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