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Norm
ÖNORM EN ISO 15512
Issue date: 2004 05 01
Plastics - Determination of water content (ISO 15512:1999)
1.1 This International Standard specifies methods for the determination of the water content of plastics in the form
of granules and finished articles. These methods do ...
Withdrawn: 2009 10 01
Publisher:
Austrian Standards International
Format:
Digital | 19 Pages
Language:
German
| English
Currently valid:
Optionally co-design standards:
ICS
1.1 This International Standard specifies methods for the determination of the water content of plastics in the form
of granules and finished articles. These methods do not test for water absorption (kinetics and equilibrium) of
plastics as measured by ISO 62. The methods are suitable for the determination of water content as low as the
following levels:
Method A 0,1 % or better;
Method B 0,01 % or better;
Method C 0,01 % or better.
Water content is an important parameter for processing materials, and should remain below the level specified in
the appropriate material standard.
1.2 Three alternative methods are specified in this International Standard.
a) Method A is an extraction method using anhydrous methanol followed by a Karl-Fischer titration of the
extracted water. It can be used for all plastics and is applicable to granules having a maximum size of
4 mm ´ 4 mm ´ 3 mm.
b) Method B is a vaporization method using heated, dry air or nitrogen gas to evaporate the water, followed by a
Karl-Fischer titration of the collected water. It can be used for all plastics and is applicable to granules smaller
than 4 mm ´ 4 mm ´ 3 mm.
c) Method C is a manometric method. The water content is determined from the increase in pressure which
results when the water is evaporated under a vacuum. This method is not applicable to plastic samples
containing volatile compounds, other than water, in amounts contributing significantly to the vapour pressure at
room temperature. Checks for the presence of large amounts of volatile compounds should be carried out
periodically, for example by gas chromatography. Such checks are particularly required for new types or
grades of material.
ÖNORM EN ISO 960
1998 02 01
Plastics - Polyamides (PA) - Determination of water content (ISO 960:1988)
Norm
Norm
Issue date :
2008 05 01
Plastics - Determination of water absorption (ISO 62:2008)
Norm
Issue date :
1978 12 01
Determination of water — Karl Fischer method (General method)
Norm
Issue date :
2009 10 01
Plastics - Determination of water content (ISO 15512:2008)