ASTM E2043-99(2021)

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: E2043 − 99 (Reapproved 2021)
Standard Test Method for
Nonvolatile Matter of Agricultural Adjuvant Solutions by
Thermogravimetry
This standard is issued under the fixed designation E2043; 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 3.1.1 nonvolatile matter, n—the matter remaining after heat-
ing an agricultural adjuvant solution at 50 °C 6 2.5 °C for 16
1.1 This test method covers the determination of the non-
h.
volatile matter of agricultural tank mix adjuvant solutions by
thermogravimetry.
4. Summary of Test Method
1.2 The values stated in SI units are to be regarded as
4.1 This test method is an empirical technique using ther-
standard. No other units of measurement are included in this
mogravimetry in which the mass of an agricultural adjuvant,
standard.
heated at a controlled rate in an appropriate environment, is
1.3 This standard does not purport to address all of the
recorded as a function of time and temperature. Nonvolatile
safety concerns, if any, associated with its use. It is the
matteristhemassremainingafterheatingataspecifictimeand
responsibility of the user of this standard to establish appro-
temperature.
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
5. Significance and Use
1.4 This international standard was developed in accor-
5.1 This test method is intended for use in quality control,
dance with internationally recognized principles on standard-
material screening, and related problem solving where a
ization established in the Decision on Principles for the
nonvolatile content is desired or a comparison can be made
Development of International Standards, Guides and Recom-
with a known material of the same type.
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
5.2 The parameters described may be altered to suit a
particular analysis, provided the changes are noted in the
2. Referenced Documents
report.
2.1 ASTM Standards:
6. Apparatus
E473 Terminology Relating to Thermal Analysis and Rhe-
ology
6.1 Aluminum Weighing Dishes, flat bottom, 70 mL capac-
E1131 Test Method for CompositionalAnalysis by Thermo-
ity.
gravimetry
6.2 Analytical Balance, with a sensitivity of 0.01 g.
E1519 Terminology Relating to Agricultural Tank Mix Ad-
juvants 6.3 Desiccator.
6.4 Drying Oven, gravity convection-type, capable of main-
3. Terminology
taining a temperature of 50 °C 6 2.5 °C. If many determina-
3.1 Definitions:
tions of solvent-based adjuvants are being made at the same
time, an explosion-proof oven should be used.
7. Procedure
This test method is under the jurisdiction of ASTM Committee E35 on
Pesticides, Antimicrobials, and Alternative Control Agents and is the direct
7.1 Bring the material to be tested to equilibrium tempera-
responsibility of Subcommittee E35.22 on P
...