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Norm
ISO 1264:1980
Ausgabedatum: 1980 11 01
Plastics — Homopolymer and copolymer resins of vinyl chloride — Determination of pH of aqueous extract
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, measureme...
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Herausgeber:
International Organization for Standardization
Format:
Digital | 2 Seiten
Sprache:
Englisch
ICS
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.