BS ISO 14849:1999
Current
The latest, up-to-date edition.
Plastics. Phenol-formaldehyde mouldings. Determination of free ammonia and ammonium compounds. Indophenol method
Hardcopy , PDF
English
15-11-1999
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Preparation of test sample
8 Procedure
9 Expression of results
10 Precision
11 Test report
Defines a colorimetric comparison method for determining the amount of ammonium compounds and ammonia in phenol-formaldehyde mouldings.
| Committee |
PRI/21
|
| DevelopmentNote |
Supersedes 97/121691 DC (03/2005)
|
| DocumentType |
Standard
|
| Pages |
16
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This International Standard specifies a colorimetric comparison method for the determination of the amount of ammonia and ammonium compounds in phenol-formaldehyde mouldings.
NOTE This International Standard does not provide an absolute measure of the amount of ammonia present.
The amount of ammonia in a moulded article is of importance when corrosion of metal inserts or contamination of foodstuffs in contact with the article has to be considered.
| Standards | Relationship |
| ISO 14849:1999 | Identical |
| ISO 4793:1980 | Laboratory sintered (fritted) filters — Porosity grading, classification and designation |
| ISO 1042:1998 | Laboratory glassware — One-mark volumetric flasks |
| ISO 648:2008 | Laboratory glassware — Single-volume pipettes |
| ISO 565:1990 | Test sieves — Metal wire cloth, perforated metal plate and electroformed sheet — Nominal sizes of openings |
| ISO 4788:2005 | Laboratory glassware — Graduated measuring cylinders |
| ISO 835-2:1981 | Laboratory glassware — Graduated pipettes — Part 2: Pipettes for which no waiting time is specified |
| ISO 5725-2:1994 | Accuracy (trueness and precision) of measurement methods and results — Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method |
| ISO 3696:1987 | Water for analytical laboratory use — Specification and test methods |
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