测量电泳涂料的电导率 ASTM D 4399-90-2017

意义及用途
4.1 The conductivity of the electrophoretic bath is due to the presence of ionic substances in the electrophoretic bath, which are derived from the carrier, and the presence of impurities in the form of ionizable acids, 基地, salts or combinations of these substances. The presence of excessive ionic impurities is not conducive to the application and performance of electrophoretic paints. The test is suitable for research, production, quality control and electrophoresis bath process control.

4.2 Other relevant methods for determining water conductivity are described in Test method D1125.

范围
1.1 This test method includes the use of commercially available equipment to determine the conductivity of an electrophoresis tank or ultrafiltrate sample.

1.2 以 SI 单位表示的值应视为标准值. 本标准不包含其他计量单位.

1.3 本标准并非旨在解决所有问题, 如果有的话, 与其使用相关的安全问题. 本标准的使用者有责任建立适当的安全和健康实践,并在使用前确定监管限制的适用性.

1.4 本国际标准以《关于制定国际标准的原则的决定》中确立的国际公认的标准化原则为基础, 世贸组织贸易技术壁垒委员会发布的指南和建议.

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