Standard Swedish standard · SS-EN ISO 15512:2009

Plastics - Determination of water content (ISO 15512:2008)

Status: Withdrawn

· Replaced by: SS-EN ISO 15512:2014
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Standard Swedish standard · SS-EN ISO 15512:2009

Plastics - Determination of water content (ISO 15512:2008)
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Scope
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.

Subjects

General (83.080.01)


Buy this standard

Standard Swedish standard · SS-EN ISO 15512:2009

Plastics - Determination of water content (ISO 15512:2008)
Subscribe on standards - Read more Dölj
Price: 1 013 SEK
standard ikon pdf

PDF

Price: 1 013 SEK
standard ikon

Paper

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Product information

Language: English

Written by: Svenska institutet för standarder

International title:

Article no: STD-70252

Edition: 2

Approved: 7/16/2009

No of pages: 32

Replaces: SS-EN ISO 15512

Replaced by: SS-EN ISO 15512:2014