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NBN EN ISO 1264:1997
Plastics - Homopolymer and copolymer resins of vinyl chloride - Determination of pH of aqueous extract (ISO 1264:1980)
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Summary
Treatment of a test portion of resin with a given volume of an aqueous solution of sodium chloride previous neutralized to pH 7,0. After stirring and decanting, measurement of the potential difference existing between a glass electrode and a reference calomel electrode immersed in the liquid maintained at 23 °C and reading of this difference, expressed in pH units directly on th pH meter scale.
Technical characteristics
| Publisher | Bureau de Normalisation Belge (NBN) |
| Publication Date | 09/09/1997 |
| Cancellation Date | 01/31/1998 |
| Page Count | 9 |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
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