ASTM D4902-99(2009)

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.
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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 31-Mar-2009
• Technical Committee: D31 - Leather
• Drafting Committee: D31.01 - Vegetable Leather

Relations

• Replaces: ASTM D4902-99(2004) - 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-2009
• Referred By: ASTM D6407-99(2020) - Standard Test Method for Analysis of Iron and Copper in Vegetable Tanning Materials
• Effective Date: 01-Apr-2009
• Referred By: ASTM D4899-99(2020) - Standard Practice for Analysis of Vegetable Tanning Materials—General
• Effective Date: 01-Apr-2009
• Referred By: ASTM D4903-99(2020) - Standard Test Method for Total Solids and Water in Vegetable Tanning Material Extracts
• Effective Date: 01-Apr-2009
• 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-2009

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 (Reapproved2009)
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 3. Summary of Test Method
1.1 This test method covers a procedure for the evaporating
3.1 This test method describes a procedure for evaporation
and drying of the 100 mL portions of analytical solution,
and drying of the 100 mL portions of the analytical solution
obtained in the methods for vegetable tannin analysis, so that
obtained in Test Methods D4903, D6401, and D6402, so that
consistent results may be obtained for the determination of
consistent results may be obtained for the determination of
total solids, soluble solids, and non-tannins in the sample. This
total solids, soluble solids, and non-tannins in the sample. This
testmethodisalsointendedforuseindeterminingthemoisture
testmethodisalsointendedforuseindeterminingthemoisture
in the hide powder samples and the moisture in raw and spent
in the air-dry and prepared, wet, hide powders used in Test
materials in the methods for vegetable tannin analysis.
Method D6401 and the moisture in raw and spent materials in
Test Method D6403.
1.2 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this
4. Significance and Use
standard.
1.3 This standard does not purport to address all of the 4.1 The test method is useful for determining the solid
safety concerns, if any, associated with its use. It is the
residue in analytical solutions.
responsibility of the user of this standard to establish appro-
4.2 Because of the possibility of unknown errors in this test
priate safety and health practices and determine the applica-
method, it is essential that the procedure be followed exactly in
bility of regulatory limitations prior to use.
order to obtain reproducible results both among specimens
within a laboratory and for analyses between laboratories.
2. Referenced Documents
2.1 ASTM Standards:
5. Apparatus
D4903 Test Method for Total Solids and Water in Vegetable
5.1 Drying Oven—Forced-air convection oven (or
Tanning Material Extracts
mechanical-convection draft oven) capable of maintaining a
D6401 Test Method for Determining Non-Tannins and Tan-
temperature of 100° 6 2.0°C.
nin in Extracts of Vegetable Tanning Materials
D6402 Test Method for Determining Soluble Solids and
5.2 Thermometer—Accurate to 6 0.2°C, should be used to
Insolubles in Extracts of Vegetable Tanning Materials
check and monitor the oven set point.
D6403 Test Method for Determining Moisture in Raw and
5.3 Desiccators and Desiccant:
Spent Materials
5.3.1 The desiccators used can be of any convenient form or
2.2 ALCA Methods:
size, but be at least 4 in. in diameter for a single tannin dish.
A1
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