ASTM D4902-99(2004)

Standard Test Method for Evaporation and Drying of Analytical Solutions

SIGNIFICANCE AND USE
The 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.

General Information

• Status: Historical
• Publication Date: 31-Mar-2004
• Technical Committee: D31 - Leather
• Drafting Committee: D31.01 - Vegetable Leather

Relations

• Replaces: ASTM D4902-99 - Standard Practice for Evaporation and Drying of Analytical Solutions
• Effective Date: 01-Apr-2004
• Replaced By: ASTM D4902-99(2009) - Standard Test Method for Evaporation and Drying of Analytical Solutions
• Effective Date: 01-Apr-2009
• Referred By: ASTM D6401-99(2020) - Standard Test Method for Determining Non-Tannins and Tannin in Extracts of Vegetable Tanning Materials
• Effective Date: 01-Apr-2004
• Referred By: ASTM D6402-99(2020) - Standard Test Method for Determining Soluble Solids and Insolubles in Extracts of Vegetable Tanning Materials
• Effective Date: 01-Apr-2004
• Referred By: ASTM D6407-99(2020) - Standard Test Method for Analysis of Iron and Copper in Vegetable Tanning Materials
• Effective Date: 01-Apr-2004
• Referred By: ASTM D4899-99(2020) - Standard Practice for Analysis of Vegetable Tanning Materials—General
• Effective Date: 01-Apr-2004
• Referred By: ASTM D4903-99(2020) - Standard Test Method for Total Solids and Water in Vegetable Tanning Material Extracts
• Effective Date: 01-Apr-2004

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D4902–99(Reapproved2004)
Standard Test Method for
Evaporation and Drying of Analytical Solutions
This standard is issued under the fixed designation D 4902; 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 consistent results may be obtained for the determination of
total solids, soluble solids, and non-tannins in the sample. This
1.1 This test method covers a procedure for the evaporating
testmethodisalsointendedforuseindeterminingthemoisture
and drying of the 100 mL portions of analytical solution,
in the air-dry and prepared, wet, hide powders used in Test
obtained in the methods for vegetable tannin analysis, so that
Method D 6401 and the moisture in raw and spent materials in
consistent results may be obtained for the determination of
Test Method D 6403.
total solids, soluble solids, and non-tannins in the sample. This
testmethodisalsointendedforuseindeterminingthemoisture
4. Significance and Use
in the hide powder samples and the moisture in raw and spent
4.1 The test method is useful for determining the solid
materials in the methods for vegetable tannin analysis.
residue in analytical solutions.
2. Referenced Documents 4.2 Because of the possibility of unknown errors in this test
method, it is essential that the procedure be followed exactly in
2.1 ASTM Standards:
order to obtain reproducible results both among specimens
D 4903 TestMethodforTotalSolidsandWaterinVegetable
within a laboratory and for analyses between laboratories.
Tanning Material Extracts
D 6401 Test Method for Determining Non-Tannins and
5. Apparatus
Tannin in Extracts of Vegetable Tanning Materials
5.1 Drying Oven—Forced-air convection oven (or
D 6402 Test Method for Determining Soluble Solids and
mechanical-convection draft oven) capable of maintaining a
Insolubles in Extracts of Vegetable Tanning Materials
temperature of 100° 6 2.0°C.
D 6403 Test Method for Determining Moisture in Raw and
5.2 Thermometer—Accurate to 6 0.2°C, should be used to
Spent Materials
check and monitor the oven set point.
2.2 ALCA Methods:
3 5.3 Desiccators and Desiccant:
A13 Evaporation and Drying of Analytical Solutions
5.3.1 The desiccators used can be of any convenient form or
3. Summary of Test Method size, but be at least 4 in. in diameter for a single tannin dish.
5.3.2 Any normal desiccating agent such as calcium sulfate,
3.1 This test method describes a procedure for evaporation
calcium chloride, or silica gel may be used.
and drying of the 100 mL portions of the analytical solution
obtained in Test Methods D 4903, D 6401, an
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