ASTM D3741-00(2020)

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: D3741 − 00 (Reapproved 2020)
Standard Test Methods for
Appearance of Admixtures Containing Halogenated Organic
Solvents
This standard is issued under the fixed designation D3741; 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 glass plate and directed with uniform intensity through the
tube, and should be shielded so that no light enters the tube
1.1 These test methods cover the visual determination of the
from the side.
physical appearance of admixtures containing halogenated
hydrocarbons. These test methods are qualitative test methods.
4. Procedure
1.2 The values stated in SI units are to be regarded as
4.1 Vigorously shake the sample to distribute any solid
standard. No other units of measurement are included in this
matter that may be deposited on the bottom of the container.
standard.
Transfer the sample to the tube and cap the tube.
1.3 This standard does not purport to address all of the
4.2 Place the tube in the viewing stand. Observe the sample
safety concerns, if any, associated with its use. It is the
through the longitudinal direction of the tube, looking for
responsibility of the user of this standard to establish appro-
suspended particles, floaters, sediment, turbidity, foaming, or
priate safety, health, and environmental practices and deter-
free water.
mine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accor-
5. Report
dance with internationally recognized principles on standard-
5.1 Report the following information:
ization established in the Decision on Principles for the
5.1.1 Report extraneous contaminants as suspended or float-
Development of International Standards, Guides and Recom-
ing matter, sediments, turbidity, or free water.
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
6. Precision and Bias
2. Significance and Use
6.1 This is a pass/fail test. It is not the intent of this test
2.1 These test methods are useful for determining the method to provide a method for determining extraneous matter
appearance of halogenated hydrocarbons and their admixtures.
on a quantitative basis.
7. Keywords
TEST METHOD A—USING NESSLER TUBES
7.1 appearance; chlorinated organic solvents; organic sol-
vents; solvents
3. Apparatus
3.1 Color Comparison Tube, 100 mL tall-form Nessler.
Tubes should be selected so that the height of the 100 mL
TEST METHOD B—USING A CLEAR, COLORLESS
graduation mark is 275 mm to 295 mm above the bottom of the
GLASS BOTTLE
tube with ground glass cap.
8. Apparatus
3.2 Viewing Stand, constructed to permit visual observation
of light transmitted through the Nessler tube in the direction of
8.1 Clear, Colorless Sample Bottle.
its longitudinal
...