ASTM E1969-19
(Practice)Standard Practice for Microcrystal Testing in Forensic Analysis for Methamphetamine and Amphetamine
Standard Practice for Microcrystal Testing in Forensic Analysis for Methamphetamine and Amphetamine
SIGNIFICANCE AND USE
5.1 This technique involves a chemical-precipitation reaction between methamphetamine or amphetamine and the precipitating reagent. The habit and the aggregation of the crystals formed could be used to distinguish methamphetamine and amphetamine from other drugs, as well as from each other.
SCOPE
1.1 This practice describes procedures applicable to the analysis of methamphetamine and amphetamine using microcrystal tests (1-6).2
1.2 These procedures are applicable to methamphetamine and amphetamine, which are present in solid dosage form or an injectable liquid form. These procedures are not typically applicable to the analysis of methamphetamine and amphetamine in biological samples.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 These procedures could generate observations indicating a positive test for methamphetamine or amphetamine which could be incorporated into the analytical scheme as defined by the laboratory.
1.5 This standard cannot replace knowledge, skills, or abilities acquired through appropriate education, training, and experience (see Practice E2326) and is to be used in conjunction with sound professional judgment by individuals with such discipline-specific knowledge, skills, and abilities.
1.6 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.7 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.
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Standards Content (Sample)
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: E1969 − 19 An American National Standard
Standard Practice for
Microcrystal Testing in Forensic Analysis for
1
Methamphetamine and Amphetamine
This standard is issued under the fixed designation E1969; 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.
INTRODUCTION
Microcrystal tests are primarily chemical-precipitation tests in which a light microscope is used to
observe and distinguish the different types of crystals formed. These tests require skill and expertise
on the part of the analyst that can be gained adequately only through appropriate training and
experience in their use. These tests should not be attempted by those who are unfamiliar with them
for use in the analysis of methamphetamine or amphetamine.
1. Scope 1.7 This international standard was developed in accor-
dance with internationally recognized principles on standard-
1.1 This practice describes procedures applicable to the
ization established in the Decision on Principles for the
analysis of methamphetamine and amphetamine using micro-
2 Development of International Standards, Guides and Recom-
crystal tests (1-6).
mendations issued by the World Trade Organization Technical
1.2 These procedures are applicable to methamphetamine
Barriers to Trade (TBT) Committee.
andamphetamine,whicharepresentinsoliddosageformoran
injectable liquid form. These procedures are not typically
2. Referenced Documents
applicable to the analysis of methamphetamine and amphet-
3
2.1 ASTM Standards:
amine in biological samples.
E1459Guide for Physical Evidence Labeling and Related
1.3 The values stated in SI units are to be regarded as
Documentation
standard. No other units of measurement are included in this
E1492Practice for Receiving, Documenting, Storing, and
standard.
Retrieving Evidence in a Forensic Science Laboratory
E1732Terminology Relating to Forensic Science
1.4 These procedures could generate observations indicat-
E2326Practice for Education and Training of Seized-Drug
ingapositivetestformethamphetamineoramphetaminewhich
Analysts
could be incorporated into the analytical scheme as defined by
E2329Practice for Identification of Seized Drugs
the laboratory.
E2548GuideforSamplingSeizedDrugsforQualitativeand
1.5 This standard cannot replace knowledge, skills, or
Quantitative Analysis
abilities acquired through appropriate education, training, and
E2764PracticeforUncertaintyAssessmentintheContextof
experience (see Practice E2326) and is to be used in conjunc-
4
Seized-Drug Analysis (Withdrawn 2020)
tion with sound professional judgment by individuals with such
discipline-specific knowledge, skills, and abilities.
3. Terminology
1.6 This standard does not purport to address all of the
3.1 Definitions:
safety concerns, if any, associated with its use. It is the
3.1.1 For definitions of terms used in this standard, refer to
responsibility of the user of this standard to establish appro-
Terminology E1732.
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use. 3.2 Definitions of Terms Specific to This Standard:
1
This practice is under the jurisdiction of ASTM Committee E30 on Forensic
3
SciencesandisthedirectresponsibilityonSubcommitteeE30.01onCriminalistics. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Nov. 1, 2019. Published December 2019. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1998. Last previous edition approved in 2011 as E1969–11. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/E1969-19. the ASTM website.
2 4
The boldface numbers in parentheses refer to a list of references at the end of The last approved version of this historical standard is referenced on
this standard. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
E1969 − 19
3.2.1 aggregation, n—the collecting of units or parts into a 7. Apparatus
mass or whole.
7.1 Astandard light microscope capable of varying magni-
3.2.2 birefringence, n—property of some crystals, those
fications including 100× is needed for viewing the crystals.
havingmorethanonerefractionindex;thispropertywillresult
This is the minimum equipment required. A polarized light
in interference colors, which
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: E1969 − 11 E1969 − 19
Standard GuidePractice for
Microcrystal Testing in Forensic Analysis offor
1
Methamphetamine and Amphetamine
This standard is issued under the fixed designation E1969; 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.
INTRODUCTION
Microcrystal tests are primarily chemical-precipitation tests in which a light microscope is used to
observe and distinguish the different types of crystals formed. These tests require skill and expertise
on the part of the analyst that can be gained adequately only through appropriate training and
experience in their use. These tests should not be attempted by those who are unfamiliar with them
for use in the analysis of methamphetamine or amphetamine.
1. Scope
1.1 This guidepractice describes some standard procedures applicable to the analysis of methamphetamine and amphetamine
2
using microcrystal tests (1-6).
1.2 These procedures are applicable to methamphetamine and amphetamine, which are present in solid dosage form or an
injectable liquid form. These procedures are not typically applicable to the analysis of methamphetamine and amphetamine in
biological samples.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 These procedures could generate observations indicating a positive test for methamphetamine or amphetamine which could
be incorporated into the analytical scheme as defined by the laboratory.
1.5 This standard cannot replace knowledge, skill,skills, or abilityabilities acquired through appropriate education, training,
and experience (see Practice E2326) and should is to be used in conjunction with sound professional judgment.judgment by
individuals with such discipline-specific knowledge, skills, and abilities.
1.6 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.7 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.
2. Referenced Documents
3
2.1 ASTM Standards:
E1459 Guide for Physical Evidence Labeling and Related Documentation
E1492 Practice for Receiving, Documenting, Storing, and Retrieving Evidence in a Forensic Science Laboratory
E1732 Terminology Relating to Forensic Science
E2326 Practice for Education and Training of Seized-Drug Analysts
E2329 Practice for Identification of Seized Drugs
E2548 Guide for Sampling Seized Drugs for Qualitative and Quantitative Analysis
1
This guidepractice is under the jurisdiction of ASTM Committee E30 on Forensic Sciences and is the direct responsibility on Subcommittee E30.01 on Criminalistics.
Current edition approved March 1, 2011Nov. 1, 2019. Published April 2011December 2019. Originally approved in 1998. Last previous edition approved in 20062011
as E1969 – 06.E1969 – 11. DOI: 10.1520/E1969-11.10.1520/E1969-19.
2
The boldface numbers in parentheses refer to a list of references at the end of this standard.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’sstandard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
E1969 − 19
E2764 Practice for Uncertainty Assessment in the Context of Seized-Drug Analysis
3. Terminology
3.1 For definitions of terms used in this standard, refer to Terminology E1732.Definitions:
3.1.1 For definitions of terms used in this standard, refer to Terminology E1732.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 aggregation, n—the collecting of units or parts into a mass or whole.
3.2.2 birefringence, n—property of some crystals, those having more than one refracti
...
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