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ASTM D4584-05

Current Revision

Standard Test Method for Measuring Apparent pH of Electrocoat Baths

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1.1 This test method covers the measurement of the free hydrogen ion concentration of electrocoat baths and their ultrafiltrates.

1.2 &si-value;

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


The pH is the measure of the free hydrogen ion concentration of a sample, and it indicates whether an electrocoat bath is acidic, neutral, or basic. Since pH measurements of good precision are made in aqueous solutions, it is suggested that the pH measurements of electrocoat baths are only semi-quantitative, and therefore such measurements should be referred to as apparent pH measurements.

The pH of electrocoat paints is used for research, production, and quality control or electrocoat bath process control.

Other related methods for determining the pH of water or aqueous systems are described in Test Methods D 1293 and E 70.

SDO ASTM: ASTM International
Document Number D4584
Publication Date Jan. 1, 2005
Language en - English
Page Count 2
Revision Level 05
Supercedes
Committee D01.21
Publish Date Document Id Type View
Jan. 1, 2005 D4584-05 Revision
June 1, 2022 D4584-05R22 Reaffirmation
June 1, 2015 D4584-05R15 Reaffirmation
June 1, 2010 D4584-05R10 Reaffirmation
May 10, 1999 D4584-86R99 Reaffirmation