ASTM D869-85(2011)
(Test Method)Standard Test Method for Evaluating Degree of Settling of Paint
Standard Test Method for Evaluating Degree of Settling of Paint
SIGNIFICANCE AND USE
Paints, if not formulated or processed properly may settle excessively. Paint that settles excessively is difficult to reincorporate into the paint system causing time delays or valuable pigment being left in the drum. This test method is an attempt to evaluate the degree of settling caused by the accelerated Test Method D1309. This very subjective method of evaluation in conjunction with the variables of Test Method D1309 raises questions as to the usefulness of the results for specification compliance.
SCOPE
1.1 This test method covers the determination of the degree of pigment suspension and ease of remixing a shelf-aged sample of paint to a homogeneous condition suitable for the intended use.
1.2 The values stated in SI 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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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D869 − 85 (Reapproved2011)
Standard Test Method for
Evaluating Degree of Settling of Paint
This standard is issued under the fixed designation D869; 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 (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 4. Apparatus
4.1 Container, standard 500-mL(1-pt) friction-top can paint
1.1 This test method covers the determination of the degree
3 1
container, 85.5 6 1.5 mm (3 ⁄8 6 ⁄16 in.) in diameter, and 98.5
of pigment suspension and ease of remixing a shelf-aged
7 1
6 1.5 mm (3 ⁄8 6 ⁄16 in.) in height.
sample of paint to a homogeneous condition suitable for the
intended use. 4.2 Spatula, weighing 45 6 1 g with square-end blade 125
3 13
mm (4 ⁄4 in.) in length and approximately 20 mm ( ⁄16 in.) in
1.2 The values stated in SI units are to be regarded as the
width, shall be used to examine the paint for pigment settling
standard. The values given in parentheses are for information
and reincorporation characteristics.
only.
5. Procedure
1.3 This standard does not purport to address all of the
5.1 Place the specimen to be tested for pigment suspension
safety concerns, if any, associated with its use. It is the
in a 500-mL (1-pt) container, filling the can to within 13 mm
responsibility of the user of this standard to establish appro-
( ⁄2 in.) of the top. Close the can tightly and hold undisturbed
priate safety and health practices and determine the applica-
for shelf aging for 6 months or for such other periods of time
bility of regulatory limitations prior to use.
agreed upon between the purchaser and the seller.
2. Referenced Documents
5.2 Open the can holding the shelf-aged sample without
shaking or agitation, and examine the sample without removal
2.1 ASTM Standards:
of supernatant vehicle. Use the spatula to determine the extent
D1309 Test Method for Settling Properties of Traffic Paints
and character of portions of the paint that may have separated
During Storage
during storage. Prepare a suitable spatula for this purpose by
cutting the tip from an ordinary 127-mm (5-in.) flexible steel
3. Significance and Use
laboratory spatula to the specified length. Hold the spatula
perpendicular to and in the center area of the paint at a height
3.1 Paints, if not formulated or processed properly may
whereby the bottom edge of the spatula is level with the top of
settle excessively. Paint that settles excessively is difficult to
the can. Drop the spatula from that position. Rate the condition
reincorporate into the paint system causing time delays or
of the sample in accordance with 5.4.
valuable pigment being left in the drum. This test method is an
attempt to evaluate the degree of settling caused by the 5.3 After examination of the entire specimen as described in
5.2, if a portion of the pigment has separated out to form a firm
accelerated Test Method D1309. This very subjective method
cake at the bottom of the container pour the supernatant portion
of evaluation in conjunction with the variables of Test Method
of the liquid off into a clean container and hold for subsequent
D1309 raises questions as to the usefulness of the results for
use. Reincorporate the separate cake by hand stirring with the
specification compliance.
spatula, adding back the liquid in small amounts until the
pigment has been reincorporated to form a homogeneous paint
suitable for the intended use or until it is determined that the
This test method is under th
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