ASTM D4902-99(2020)
(Test Method)Standard Test Method for Evaporation and Drying of Analytical Solutions
Standard Test Method for Evaporation and Drying of Analytical Solutions
SIGNIFICANCE AND USE
4.1 This test method is useful for determining the solid residue in analytical solutions.
4.2 Because of the possibility of unknown errors in this test method, it is essential that the procedure be followed exactly in order to obtain reproducible results, both among specimens within a laboratory and for analyses between laboratories.
SCOPE
1.1 This test method covers a procedure for the evaporating and drying of the 100 mL portions of analytical solution obtained in the methods for vegetable tannin analysis, so that consistent results may be obtained for the determination of total solids, soluble solids, and non-tannins in the sample. This test method is also intended for use in determining the moisture in the hide powder samples and the moisture in raw and spent materials in the methods for vegetable tannin analysis.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D4902 − 99 (Reapproved 2020)
Standard Test Method for
Evaporation and Drying of Analytical Solutions
This standard is issued under the fixed designation D4902; 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.
1. Scope D6403 Test Method for Determining Moisture in Raw and
Spent Materials
1.1 This test method covers a procedure for the evaporating
and drying of the 100 mL portions of analytical solution 2.2 ALCA Methods:
obtained in the methods for vegetable tannin analysis, so that A13 Evaporation and Drying of Analytical Solutions
consistent results may be obtained for the determination of
total solids, soluble solids, and non-tannins in the sample. This
3. Summary of Test Method
testmethodisalsointendedforuseindeterminingthemoisture
3.1 This test method describes a procedure for evaporation
in the hide powder samples and the moisture in raw and spent
and drying of the 100 mL portions of the analytical solution
materials in the methods for vegetable tannin analysis.
obtained in Test Methods D4903, D6401, and D6402, so that
1.2 The values stated in SI units are to be regarded as
consistent results may be obtained for the determination of
standard. No other units of measurement are included in this
total solids, soluble solids, and non-tannins in the sample. This
standard.
testmethodisalsointendedforuseindeterminingthemoisture
in the air-dry and prepared, wet, hide powders used in Test
1.3 This standard does not purport to address all of the
Method D6401, and the moisture in raw and spent materials in
safety concerns, if any, associated with its use. It is the
Test Method D6403.
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
4. Significance and Use
mine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accor-
4.1 This test method is useful for determining the solid
dance with internationally recognized principles on standard-
residue in analytical solutions.
ization established in the Decision on Principles for the
4.2 Because of the possibility of unknown errors in this test
Development of International Standards, Guides and Recom-
method, it is essential that the procedure be followed exactly in
mendations issued by the World Trade Organization Technical
order to obtain reproducible results, both among specimens
Barriers to Trade (TBT) Committee.
within a laboratory and for analyses between laboratories.
2. Referenced Documents
5. Apparatus
2.1 ASTM Standards:
D4903 Test Method for Total Solids and Water in Vegetable 5.1 Drying Oven—Forced-air convection oven (or
mechanical-convection draft oven) capable of maintaining a
Tanning Material Extracts
D6401 Test Method for Determining Non-Tannins and Tan- temperature of 100° 6 2.0°C.
nin in Extracts of Vegetable Tanning Materials
5.2 Thermometer—Accurate to 6 0.2°C, should be used to
D6402 Test Method for Determining Soluble S
...
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