ASTM D1978-91(1996)

Standard Guide for Analysis of Electrocoat Bath Samples

SCOPE
1.1 This guide covers the selection of test methods for determination of the important parameters that affect the performance of electrocoating paints.
1.2 The test methods involved are D4370, D4399, D4584, and D5145.

General Information

• Status: Historical
• Publication Date: 21-Feb-1991
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.21 - Chemical Analysis of Paints and Paint Materials

Relations

• Replaced By: ASTM D1978-91(2002) - Standard Guide for Analysis of Electrocoat Bath Samples
• Effective Date: 22-Feb-1991

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 1978 – 91 (Reapproved 1996)
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Guide for
Analysis of Electrocoat Bath Samples
This standard is issued under the fixed designation D 1978; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope must be adjusted when deviations from the norm occur.
3.2 The test methods for electrocoat baths are unique, as the
1.1 This guide covers the selection of test methods for
aqueous samples have a nonvolatile content between 8 and
determination of the important parameters that affect the
25 %. Constant agitation must be present when the samples are
performance of electrocoating paints.
taken and during the measurement of some of the parameters.
1.2 The test methods involved are D 4370, D 4399, D 4584,
and D 5145.
4. Test Methods
2. Referenced Documents 4.1 Acid and Base Content—Test Methods D 4370 covers
the determination of acid and base milliequivalent content of
2.1 ASTM Standards:
electrocoat baths.
D 4370 Test Methods for Acid and Base Milliequivalent
2 4.2 Electrical Conductivity—Test Method D 4399 describes
Content of Electrocoat Bath Samples
the determination of the electrical conductivity of electrocoat
D 4399 Test Method for Measuring Electrical Conductivity
2 baths.
of Electrocoat Baths
4.3 pH Determination—Test Method D 4584 describes the
D 4584 Test Method for Measuring Apparent pH of Elec-
2 measurement of the apparent pH of paints and ultrafiltrates of
trocoat Baths
electrocoat baths.
D 5145 Test Method for Nonvolatile and Pigment Content
...