Standard Test Method for Determining Particle Size of Multicolor Lacquers

SCOPE
1.1 This test method employs photographic reference standards to evaluate the particle size of multicolor lacquers.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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.

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Historical
Publication Date
09-Feb-2002
Current Stage
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ASTM D2338-84(1996)e1 - Standard Test Method for Determining Particle Size of Multicolor Lacquers
English language
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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.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.
e1
Designation: D 2338 – 84 (Reapproved 1996)
Standard Test Method for
Determining Particle Size of Multicolor Lacquers
This standard is issued under the fixed designation D 2338; 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.
e NOTE—Unit of measurement statement was added editorially in June 1996.
1. Scope 5. Reference Standards
1.1 This test method employs photographic reference stan- 5.1 The photographic reference standards were prepared by
dards to evaluate the particle size of multicolor lacquers. photographing actual sprayed panels of multicolor lacquers
1.2 The values stated in inch-pound units are to be regarded that were made in the five particle sizes normally used in
as the standard. The values given in parentheses are for commercial multicolor lacquers. The standard designations are
information only. as follows (Fig. 1(a), 1(b), 1(c)): fine, small, medium, large,
1.3 This standard does not purport to address all of the and extra large, and represent the correct nomenclature for
safety concerns, if any, associated with its use. It is the properly applied multicolor lacquer.
responsibility of the user of this standard to establish appro-
6. Apparatus
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. 6.1 Spray Gun, pressure-feed internal-mix type, tip 0.086 in.
(2.2 mm) in diameter with wide-spray nozzle.
2. Referenced Documents
7. Procedure
2.1 ASTM Adjuncts:
Grain Sizes (5 photos)
NOTE 1—The particle size of multicolor lacquer is dependent upon the
spray conditions during the application procedure. In order to get uniform
3. Summary of Test Method
results the exact spray conditions should be agreed upon between the
purchaser and the seller.
3.1 The samples to be tested are mixed by pouring from one
container to another until they are uniform in con-sistency 7.1 Spray the lacquer on a coated white paper panel with the
before spraying on coated white paper stock. After the lacquers fluid and atomizing pressures adjusted to give a spreading rate
2 2
are dry they are compared with photographic reference stan- of 150 to 200 ft /gal (3.7 to 4.9 m /L) for complete covering
2 2
dards to determine the particle size. and 200 to 300 ft /gal (4.9 to 7.35 m /L) for scatter coat
application. After the sprayed lacquer is thoroughly dry,
4. Significance and Use
determine the particle size on the panel by comparing it to the
4.1 This test method provides a uniform nomenclature for photog
...

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