ASTM D5097-90(1996)

Standard Test Method for Filter-Retained Solids Content of Polymer Latexes (Withdrawn 2004)

SCOPE
1.1 This test method covers the determination of the filter-retained solids (grit) content of polymeric latex vehicles, that is, material present in a latex specimen that is retained on a 200-mesh screen.
1.2 The values stated in SI units are to be regarded as standard.
1.3 This standard does not purport to address the safety problems 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.
WITHDRAWN RATIONALE
This test method covers the determination of the filter-retained solids (grit) content of polymeric latex vehicles, that is, material present in a latex specimen that is retained on a 200-mesh screen.
Formerly under the jurisdiction of Committee D01 on Paint and Related Coatings, Materials, and Applications, this test method was withdrawn in December 2004 in accordance with section 10.6.3.1 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.

General Information

• Status: Withdrawn
• Publication Date: 31-Dec-1995
• Withdrawal Date: 14-Dec-2004
• ICS: 83.040.10 - Latex and raw rubber
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.33 - Polymers and Resins

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D5097–90 (Reapproved 1996)
Standard Test Method for
Filter-Retained Solids Content of Polymer Latexes
This standard is issued under the fixed designation D 5097; 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 5. Apparatus
1.1 This test method covers the determination of the filter- 5.1 Analytical Balance, capable of weighing to 0.1 mg.
retained solids (grit) content of polymeric latex vehicles, that 5.2 Balance, capacity of 500 g, capable of weighing to 0.1
is, material present in a latex specimen that is retained on a g.
200-mesh screen. 5.3 Dessicator.
1.2 The values stated in SI units are to be regarded as 5.4 Forced-Ventilation Oven, Type II B conforming to
standard. Specification E 145.
1.3 This standard does not purport to address all of the 5.5 Forceps.
safety concerns, if any, associated with its use. It is the 5.6 Spectra Mesh Filtration Unit, (90-mm size).
responsibility of the user of this standard to establish appro- 5.7 Graduated Cyclinder, 500-mL.
priate safety and health practices and determine the applica- 5.8 Polyethylene Water Wash Bottle, 500-mL.
bility of regulatory limitations prior to use. 5.9 Two Beakers, 800-mL.
5.10 Screen, stainless steel, 90-mm diameter, 200-mesh (as
2. Referenced Documents
defined in Specification E 11).
2.1 ASTM Standards:
5.11 Screen, cloth or stainless steel, 20-mesh (as defined in
E 11 Specification for Wire-Cloth Sieves for Testing Pur- Specification E 11).
poses
6. Procedure
E 145 Specification for Gravity-Convection and Forced-
Ventilation Ovens 6.1 Weigh the clean, dry, 200-mesh screen to the nearest 0.1
mg. Record the weight, A.
3. Summary of Test Method
6.2 Place the screen into the filtration apparatus.
3.1 A specified weight of a polymer latex, first filtered
NOTE 2—The screen should be held firmly in place while screwing
through a 20-mesh screen to remove skins and large agglom-
down the filter chamber to ensure that the screen seats smoothly on the
erates, is water-washed through a preweighed 200-mesh stain-
plastic ring.
less screen. The dried residue on the screen, defined as the
6.3 Weigh 500 g of water into the 800-mL beaker and set
filter-retained solids, is expressed as parts per million (ppm) of
aside.
the polymer latex.
6.4 Hand-stir the polymer latex sample for about 15 s using
NOTE 1— Other screens or sample sizes, or both, may be used upon
a wide blade spatula to ensure adequate mixing, taking care not
agreement between the producer and the user. Precision may vary with
to beat in air. Filter about 150 g of the latex sample through a
differing mesh size and sample weight.
standard 20-mesh cloth or stainless-steel sieve to remove skins
or large pieces of coagulum.
4. Significance and Use
6.5 Stir the filtered sample gently with the spatula. Imme-
4.1 The amount of excessive oversized particulate matter
diately weigh out by difference about 50 g, weighed to 0.1 g,
present in polymer latexes can detract from the appearance
of the latex into an 800-mL beaker. Record the latex specimen
properties of applied formulated coatings and may reduce
weight, B.
filtration rates or clog filters in processing or application
6.6 Transfer the 500 g of water from 6.3 to the beaker with
processes.
the specimen and stir the mixture with the spatula.
4.2 This test method may be
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