ASTM E725-96
(Test Method)Standard Test Method for Sampling Granular Carriers and Granular Pesticides
Standard Test Method for Sampling Granular Carriers and Granular Pesticides
SCOPE
1.1 This test method presents general procedures for sampling and sampling practice for granular carriers and granular pesticides.
1.2 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. For specific hazard statements see Section 5.
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Designation: E 725 – 96
Standard Test Method for
Sampling Granular Carriers and Granular Pesticides
This standard is issued under the fixed designation E 725; 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
1.1 This test method presents general procedures for sam-
pling and sampling practice for granular carriers and granular
pesticides.
1.2 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 appro-
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. For specific hazard
FIG. 1 Sampling Tube
statements see Section 5.
5. Hazards
2. Summary of Test Method
5.1 Safety Precautions—Before sampling granular pesti-
2.1 To produce a sample that truly represents the nature and
cides read the precautionary statements on the product label
condition of the material from which it was obtained, a gross
and the material safety data sheet (MSDS). Take proper
sample is reduced by standard laboratory procedures (cone and
precautions to prevent skin contact and inhalation of the fines
quartering, riffling, etc.) to a suitable laboratory sample. The
and vapors. Whenever possible, work under a hood. Take care
basic sampling unit for granules is at least 5003 the weight of
to prevent contamination of the surrounding area. Always wear
the largest particles and is obtained in a manner to give high
the appropriate safety equipment and, where indicated, wear
probability that it contains a representative portion of the
respiratory devices approved by NIOSH for the product being
material. As a safeguard against unforeseen sectional varia-
sampled.
tions, a number of unit samples may be obtained and combined
5.2 Sample Precautions for Sensitive Materials—Some
to form a gross sample.
products (hygroscopic, volatile, or oxidizable, etc.) may re-
3. Significance and Use quire special sampling precautions. Sample exposure should be
minimized.
3.1 This procedure was designed principally for clay, corn-
5.3 Sample Containers—These items, as well as the sam-
cob, nut shell, or sand granular carriers and granular pesticide
pling apparatus, must be clean and free of any material that
products but need not be limited to these materials. There may
might contaminate the sample. An appropriate container should
be more appropriate sampling methods for other types of
be selected for the product and handling it will receive. For
granular carriers and products.
example, containers for hygroscopic, readily oxidizable, vola-
4. Apparatus
tile, or moisture-sensitive material, as well as for those
materials to be tested for moisture content, must be capable of
4.1 Sample Container, fabricated from glass, plastic, or
being sealed airtight.
metal as required.
5.4 Care and Labeling of Sample—Care should be taken to
4.2 Sample Splitter, single-stage riffle type.
ensure that the sample is properly labeled and reaches the
4.3 Grain Thief or Sampling Tube (Fig. 1), constructed
laboratory promptly and in its original state.
from aluminum, chrome steel, poly(vinyl chloride) or other
suitable material, 30 in. (762 mm) long and 1.5 to 1.75 in. (38
6. Procedures
to 44 mm) in diameter.
6.1 Sampling Packages—When sampling material that is
contained in a number of packages, Table 1 is a guide to the
minimum number of packages (selected at random) to be
This test method is under the jurisdiction of ASTM Committee E-35 on
sampled.
Pesticides and is the direct responsibility of Subcommittee E35.22 on Pesticide
6.2 Sampling During Production—Collect production con-
Formulation and Application Systems.
trol samples as the product leaves the blender, or as it is
Current edition approved March 10, 1996. Published May 1996. Originally
e1
packaged, taking ⁄2-lb (225-g) portions at sufficient, regularly
published as E 725 – 80. Last previous edition E 725 – 86 (1991) .
spaced intervals to obtain a total sample size representing a
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E 725
TABLE 1 Minimum Number of Packages to Be Sampled
Minimum Minimum Minimum
Number of Number of Number of
Number
...
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