ASTM D1978-91(2002)

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
• ICS: 25.220.20 - Surface treatment
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.21 - Chemical Analysis of Paints and Paint Materials

Relations

• Replaces: ASTM D1978-91(1996) - Standard Guide for Analysis of Electrocoat Bath Samples
• Effective Date: 22-Feb-1991
• Replaced By: ASTM D1978-91(2008) - Standard Guide for Analysis of Electrocoat Bath Samples
• Effective Date: 01-Feb-2008

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D1978–91(Reapproved 2002)
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 mined throughout the operation of the bath. These parameters
must be adjusted when deviations from the norm occur.
1.1 This guide covers the selection of test methods for
3.2 The test methods for electrocoat baths are unique, as the
determination of the important parameters that affect the
aqueous samples have a nonvolatile content between 8 and
performance of electrocoating paints.
25 %. Constant agitation must be present when the samples are
1.2 The test methods involved are D 4370, D 4399, D 4584,
taken and during the measurement of some of the parameters.
and D 5145.
4. Test Methods
2. Referenced Documents
4.1 Acid and Base Content—Test Methods D 4370 covers
2.1 ASTM Standards:
the determination of acid and base milliequivalent content of
D 4370 Test Methods for Acid and Base Milliequivalent
2 electrocoat baths.
Content of Electrocoat Bath Samples
4.2 ElectricalConductivity—Test Method D 4399 describes
D 4399 Test Method for Measuring Electrical Conductivity
2 the determination of the electrical conductivity of electrocoat
of Electrocoat Baths
baths.
D 4584 Test Method for Measuring Apparent pH of Elec-
4.3 pH Determination—Test Method D 4584 describes the
trocoat Baths
measurement of the apparent pH of paints and ultrafiltrates of
D 5145 Test Method for Nonvolatile and Pigment Content
electrocoat baths.
of Electrocoat Baths
4.4 NonvolatileandPigmentContent—TestMethodD 5145
3. Significance and Use covers the determination of nonvolatile and inorganic pigment
content of electrocoat baths.
3.1 This guide indicates test procedures recommend
...