ASTM E1969-11
(Guide)Standard Guide for Microcrystal Testing in the Forensic Analysis of Methamphetamine and Amphetamine
Standard Guide for Microcrystal Testing in the Forensic Analysis of Methamphetamine and Amphetamine
SIGNIFICANCE AND USE
This technique produces a chemical-precipitation reaction between methamphetamine or amphetamine and the precipitating reagent. The habit and the aggregation of the crystals formed may be used to distinguish methamphetamine and amphetamine from other drugs.
SCOPE
1.1 This guide describes some standard procedures applicable to the analysis of methamphetamine and amphetamine 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 This standard cannot replace knowledge, skill, or ability acquired through appropriate education, training, and experience and should be used in conjunction with sound professional judgment.
1.5 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.
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Designation: E1969 − 11
Standard Guide for
Microcrystal Testing in Forensic Analysis of
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 2. Referenced Documents
3
1.1 This guide describes some standard procedures appli- 2.1 ASTM Standards:
E1459Guide for Physical Evidence Labeling and Related
cable to the analysis of methamphetamine and amphetamine
2
using microcrystal tests (1-6). Documentation
E1492Practice for Receiving, Documenting, Storing, and
1.2 These procedures are applicable to methamphetamine
Retrieving Evidence in a Forensic Science Laboratory
andamphetamine,whicharepresentinsoliddosageformoran
E1732Terminology Relating to Forensic Science
injectable liquid form. These procedures are not typically
E2329Practice for Identification of Seized Drugs
applicable to the analysis of methamphetamine and amphet-
E2548GuideforSamplingSeizedDrugsforQualitativeand
amine in biological samples.
Quantitative Analysis
1.3 The values stated in SI units are to be regarded as
3. Terminology
standard. No other units of measurement are included in this
standard.
3.1 For definitions of terms used in this standard, refer to
Terminology E1732.
1.4 This standard cannot replace knowledge, skill, or ability
acquired through appropriate education, training, and experi-
3.2 Definitions of Terms Specific to This Standard:
ence and should be used in conjunction with sound profes- 3.2.1 aggregation, n—the collecting of units or parts into a
sional judgment.
mass or whole.
3.2.2 birefringence, n—property of some crystals, having
1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the more than one refraction index; this property will result in
interferencecolors,whichareviewedthroughapolarizedlight
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- microscope.
bility of regulatory limitations prior to use.
3.2.3 blades, n—broad, flat, elongated crystals.
3.2.4 grains, n—thick tablets having nearly equal width,
breadth and thickness.
1
This guide is under the jurisdiction of ASTM Committee E30 on Forensic
3.2.5 habit, n—the external morphology of the crystal.
SciencesandisthedirectresponsibilityonSubcommitteeE30.01onCriminalistics.
Current edition approved March 1, 2011. Published April 2011. Originally
3
approved in 1998. Last previous edition approved in 2006 as E1969–06. DOI: For referenced ASTM standards, visit the ASTM website, www.astm.org, or
10.1520/E1969-11. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
2
The boldface numbers in parentheses refer to a list of references at the end of Standards volume information, refer to the standard’s Document Summary page on
this standard. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
E1969 − 11
3.2.6 microdrop, n—a small drop of liquid that would fit on 8.6 Amphetamine Standard.
theendofastandardsize,flattenedtoothpick;theapproximate
8.7 Methamphetamine Standard.
volume of this drop would be 10 to 25µL.
3.2.7 needles (acicular), n—long, thin crystals with pointed
9. Sampling, Test Specimens, and Text Units—
ends.
9.1 The general handling and tracking of samples should
3.2.8 plates, n—bladeswithnearlyequallengthandbreadth
meetorexceedtherequirementsofPracticeE1492andGuides
and of a thickness substantially less than the width.
E1459 and E2548.
3.2.9 rods, n—long, thin crystals with squared off ends.
10. Calibration and Standardization
3.2.10 tablets, n—plates with appreciable thickness but less
than the length or breadth. 10.1 The reagents utilized for these microcrystal tests are to
be tested for reliability using amphetamine and methamphet-
4. Summary of the Technique
aminestandardsandnegativecontrolsfollowingtheprescribed
4.1 Asmall sample of the material containing the suspected
procedure. Only when it is determine
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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:E1969–06 Designation:E1969–11
Standard Guide for
Microcrystal Testing in the Forensic Analysis of
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 guide describes some standard procedures applicable to the analysis of methamphetamine and amphetamine using
2
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.
1.3This guide offers an organized collection of information or a series of options and does not recommend a specific course of
action. This document cannot replace education or experience and should be used in conjunction with professional judgment. Not
all aspects of this guide may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the
standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied
without consideration of a project’s many unique aspects. The word “Standard” in the title of this document means only that the
document has been approved through the ASTM consensus process.
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 This standard cannot replace knowledge, skill, or ability acquired through appropriate education, training, and experience
and should be used in conjunction with sound professional judgment.
1.5 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.
2. Terminology 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
E2329 Practice for Identification of Seized Drugs
E2548 Guide for Sampling Seized Drugs for Qualitative and Quantitative Analysis
3. Terminology
3.1 For definitions of terms used in this standard, refer to Terminology E1732.
3.2 Definitions of Terms Specific to This Standard:
1
This guide 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 Aug.March 1, 2006.2011. Published September 2006.April 2011. Originally approved in 1998. Last previous edition approved in 20012006 as
E1969 – 016. DOI: 10.1520/E1969-06.10.1520/E1969-11.
2
The boldface numbers in parentheses refer to a list of references at the end of this standard.
3
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’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 ----------------------
E1969–11
2.1.1
3.2.1 aggregation, n—the collecting of units or parts into a mass or whole.
2.1.2
3.2.2 birefringence, n—property of some crystals, having more than one refraction index. Thisindex; this property will result
in interference colors, which are viewed through a polarized light microscope.
2.1.33.2.3 blades, n—broad, flat, elongated crystals.
2.1.4
3.2.4 grains, n—thick tablets having nearly equal width, br
...
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