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ISO 1264:1980
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Plastics Homopolymer and copolymer resins of vinyl chloride Determination of pH of aqueous extract
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
English, French
01-11-1980
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.
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