ASTM D2203-93
(Test Method)Standard Test Method for Staining from Sealants
Standard Test Method for Staining from Sealants
SCOPE
1.1 This test method covers a laboratory procedure for determining whether a sample of sealant will cause staining of the substrate when in the contact with masonry, concrete, or stone (marble, limestone, sandstone, granite, etc.).
1.2 The values stated in SI (metric) units are to be regarded as the standard. The values given in parentheses are provided for information only.
1.3 This standard does not purport to address all of the safety problems, 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.
Note 1--Currently there is no ISO standard similar to this test method.
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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
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Designation: D 2203 – 93
Standard Test Method for
Staining from Sealants
This standard is issued under the fixed designation D 2203; 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 5.3 Filter Paper, ten sheets, high-grade, rapid, qualitative 9
cm in diameter.
1.1 This test method covers a laboratory procedure for
5.4 Aluminum Foil, household-type, 25.4 mm (1 in.) square.
determining whether a sample of sealant will cause staining of
5.5 Weight, 300-g.
the substrate when in the contact with masonry, concrete, or
5.6 Spatula, small, thin, steel.
stone (marble, limestone, sandstone, granite, etc.).
5.7 Glass Plate, at least 100 by 100 mm (4 by 4 in.).
1.2 The values stated in SI (metric) units are to be regarded
5.8 Desiccator, with drying agent.
as the standard. The values given in parentheses are provided
for information only.
6. Sampling
1.3 This standard does not purport to address all of the
6.1 Take the test specimen from a previously unopened
safety problems, if any, associated with its use. It is the
container and thoroughly mix before using, if required for
responsibility of the user of this standard to establish appro-
homogeneity.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
7. Conditioning
2. Referenced Documents 7.1 Condition the sample in a closed container for at least 5
hat23 6 2°C (73.4 6 3.6°F).
2.1 ASTM Standards:
C 510 Test Method for Staining and Color Change of
8. Procedure
Single- or Multicomponent Joint Sealants
8.1 Dry the filter papers for 5 to8hinan oven maintained
C 717 Terminology of Building Seals and Sealants
at 104.5 6 3°C (220 6 5.4°F). At the end of the drying period,
remove from the oven and store in a desiccator until cool.
3. Terminology
8.2 Remove ten filter papers from the desiccator, staple
3.1 Definitions—Refer to Terminology C 717 for definitions
them together, and place them on a glass plate. Set the brass
of the following terms used in this test method: compound,
ring with beveled edge down on the center of the filter papers.
sealant, substrate.
Fill the ring flush with thoroughly mixed sealant, taking care to
4. Significance and Use incorporate as little air as possible with the compound. Place a
25.4-mm (1-in.) square piece of aluminum foil on top of the
4.1 Staining of a building is an aesthetically undesirable
ring, and the 300-g weight on top of that.
occurrence. This test method evaluates the likelihood of a
8.3 Allow the filled ring to stand for 72 h at 23 6 2°C (73.4
sealant causing an early stain on a porous substrate, when the
6 3.6°F). Then slide a spatula under the brass ring and remove
stain is caused by gross exudation from the sealant. This test
the ring and compound. Hold the top filter paper up to the light
method does not predict staining caused by other factors.
with a glass plate under it and, with a sharp pencil, mark the
4.2 See also Test Method C 510.
maximum and minimum diameters of the stain. Measure these
5. Apparatus and Materials diameters to the nearest 0.5 mm. Subtract 19 (diameter of ring
in millimetres) from the average of the two diameters and
5.1 Convection Oven, having a temperature controlled at
divide by 2. Record this result as width of stain. (Width of
104.5 6 3°C (220 6 5°F).
3 3 stain 5 (average − 19)/2).
5.2 Brass Ring,19mm( ⁄4 in.) inside diameter, 19 mm ( ⁄4
8.4 Examine the ten individual papers for depth of stain by
in.) high, walls at one end beveled to a minimum diameter.
holding them up to a light. Record the number of papers,
including the first one, showing any evidence of staining as
number of papers stained.
This test method is under the jurisdiction of ASTM Committee C-24 on 8.5 Report the sum of width of stain and number of papers
Building Seals and Sealants and is the direct responsibility of Subcommittee C24.16
stained as the stain index.
on Emulsion Sealants.
Current edition approved June 15, 1993. Published August 1993. Originally
published as D 2203 – 63 T. Last previous edition D 2203 – 88.
This test method is based on the use of Whatman No. 1 filter paper,
Annual Book of ASTM Standards, Vol 04.07.
manufactured by Whatman, Inc., 9 Bridewell Place, Clifton, NJ 07073.
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