ASTM E725-96(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: E725 − 96 (Reapproved 2021)
Standard Test Method for
Sampling Granular Carriers and Granular Pesticides
This standard is issued under the fixed designation E725; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Significance and Use
1.1 This test method presents general procedures for sam-
3.1 This procedure was designed principally for clay,
pling and sampling practice for granular carriers and granular
corncob, nut shell, or sand granular carriers and granular
pesticides.
pesticide products but need not be limited to these materials.
There may be more appropriate sampling methods for other
1.2 The values stated in inch-pound units are to be regarded
types of granular carriers and products.
as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only
4. Apparatus
and are not considered standard.
4.1 Sample Container, fabricated from glass, plastic, or
1.3 This standard does not purport to address all of the
metal as required.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4.2 Sample Splitter, single-stage riffle type.
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use. 4.3 GrainThieforSamplingTube(Fig.1),constructedfrom
aluminum, chrome steel, poly(vinyl chloride) or other suitable
For specific hazard statements see Section 5.
material, 30 in. (762 mm) long and 1.5 in. to 1.75 in. (38 mm
1.4 This international standard was developed in accor-
to 44 mm) in diameter.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
5. Hazards
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
5.1 Safety Precautions—Before sampling granular pesti-
Barriers to Trade (TBT) Committee.
cides read the precautionary statements on the product label
and the material safety data sheet (MSDS). Take proper
2. Summary of Test Method
precautions to prevent skin contact and inhalation of the fines
2.1 To produce a sample that truly represents the nature and and vapors. Whenever possible, work under a hood. Take care
condition of the material from which it was obtained, a gross topreventcontaminationofthesurroundingarea.Alwayswear
sampleisreducedbystandardlaboratoryprocedures(coneand the appropriate safety equipment and, where indicated, wear
quartering, riffling, etc.) to a suitable laboratory sample. The respiratory devices approved by NIOSH for the product being
basic sampling unit for granules is at least 500× the weight of sampled.
the largest particles and is obtained in a manner to give high
5.2 Sample Precautions for Sensitive Materials—Some
probability that it contains a representative portion of the
products (hygroscopic, volatile, or oxidizable, etc.) may re-
material. As a safeguard against unforeseen sectional
quirespecialsamplingprecautions.Sampleexposureshouldbe
variations, a number of unit samples may be obtained and
minimized.
combined to form a gross sample.
5.3 Sample Containers—These items, as well as the sam-
pling apparatus, must be clean and free of any material that
1 mightcontaminatethesample.Anappropriatecontainershould
This test method is under the jurisdiction of ASTM Committee E35 on
be selected for the product and handling it will receive. For
Pesticides, Antimicrobials, and Alternative Control Agents and is the direct
responsibility of Subcommittee E35.22 on Pesticide Formulations and Delivery
example, containers for hygroscopic, readily oxidizable,
Systems.
volatile, or moisture-sensitive material, as well as for those
Current edition approved April 1, 2021. Published April 2021. Originally
materials to be tested for moisture content, must be capable of
approved in 1980. Last previous edition approved in 2020 as E725–96 (2020).
DOI: 10.1520/E0725-96R21. being sealed airtight.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
E725 − 96 (2021)
Packages (drums, bags, etc.) may be sampled in accordance
with Table 1 to obtain a gross sample. Insert the probe in the
material vertically to penetrate the mass. Discharge the sample
into a container. To improve sample representation, replicate
samplescanbetakenfromalternativelocationsinthepackage.
6.4.1 The use of a probe can cause attrition; therefore, the
probe sampling procedure is not recommended when sampling
for pa
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