BS ISO 14897:2002
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Plastics. Polyols for use in the production of polyurethane. Determination of water content
Hardcopy , PDF
04-08-2023
English
29-07-2002
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Application
6 Interferences
7 Reagents
8 Apparatus
9 Sampling
10 Standardization of reagent
11 Procedure
12 Expression of results
13 Precision and bias
14 Test report
Annex A (informative) Interlaboratory precision studies
Defines methods to measure the water content of polyols which are employed as polyurethane raw materials. Method A: a manual amperometric method included to define the principles of the Karl Fischer measurement. Method B: includes an automated amperometric procedure and an automated coulometric procedure.
| Committee |
PRI/42
|
| DevelopmentNote |
Supersedes 01/120854 DC and 97/121686 DC. (08/2002)
|
| DocumentType |
Standard
|
| Pages |
16
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
This International Standard specifies methods used to measure the water content of polyols employed as polyurethane raw materials. Method A is a manual amperometric method which has been included to better define the principles of the Karl Fischer measurement. Amperometric methods are applicable to a wide range of polyols, including those which have enough colour to obscure a visual end-point. Method B includes an automated amperometric procedure and an automated coulometric procedure. The coulometric procedure is an absolute method that does not require calibration and gives improved sensitivity compared with amperometric methods.
| Standards | Relationship |
| ISO 14897:2002 | Identical |
| ISO 6353-1:1982 | Reagents for chemical analysis — Part 1: General test methods |
| ASTM D 4672 : 2012-08 | TEST METHODS FOR POLYURETHANE RAW MATERIALS: DETERMINATION OF WATER CONTENT OF POLYOLS |
| ISO 6353-3:1987 | Reagents for chemical analysis — Part 3: Specifications — Second series |
| ISO 3696:1987 | Water for analytical laboratory use — Specification and test methods |
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