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ISO 1264:1980
New product
ISO 1264:1980 Plastics - Homopolymer and copolymer resins of vinyl chloride - Determination of pH of aqueous extract
standard by International Organization for Standardization, 11/01/1980
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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.