ISO-1264 › Plastics - Homopolymer and copolymer resins of vinyl chloride - Determination of pH of aqueous extract

ISO-1264 - 2ND EDITION - CURRENT


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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.

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Document Number

ISO 1264:1980

Revision Level

2ND EDITION

Status

Current

Publication Date

Nov. 1, 1980

Committee Number

ISO TC 61/SC 9/WG 20