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Significance and Use
This technique produces a chemical-precipitation reaction between cocaine and the precipitating reagent. The habit and the aggregation of the crystals formed may be used to distinguish cocaine from other drugs (6).
This technique can be utilized on cocaine present in either the salt or free base form.
This technique does not distinguish between the salt and free base forms.
1.1 This guide describes some standard procedures applicable to the analysis of cocaine using multiple microcrystal tests (1-5).
1.2 These procedures are applicable to cocaine, which is present in solid dosage form or an injectable liquid form. They are not typically applicable to the analysis of cocaine 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
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
ICS Number Code 07.100.10 (Medical microbiology)
UNSPSC Code 51142926(Cocaine hydrochloride)
ASTM E1968-11, Standard Guide for Microcrystal Testing in the Forensic Analysis of Cocaine, ASTM International, West Conshohocken, PA, 2011, www.astm.orgBack to Top