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sklademVydáno: 1980
ISO 1264:1980
ISO 1264:1980-Plastics — Homopolymer and copolymer resins of vinyl chloride — Determination of pH of aqueous extract
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Anglicky PDF
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Francouzsky PDF
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Anglicky Hardcopy
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Francouzsky Hardcopy
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| Označení normy: | ISO 1264:1980 |
| Počet stran: | 2 |
| Vydání: | 1 |
| Vydáno: | 1980 |
| Počet stran (Anglicky): | 2 |
| Počet stran (Francouzsky): | 2 |
DESCRIPTION
ISO 1264:1980
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.