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ASTM E1968-98(2003)

Current Reaffirmation

Standard Practice for Microcrystal Testing in Forensic Analysis for Cocaine

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1.1 This guide describes some standard procedures applicable to the analysis of cocaine using multiple microcrystal tests.

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.


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.

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.

SDO ASTM: ASTM International
Document Number E1968
Publication Date Nov. 10, 1998
Language en - English
Page Count 3
Revision Level 98(2003)
Supercedes
Committee E30.01
Publish Date Document Id Type View
Nov. 15, 2019 E1968-19 Revision
March 1, 2011 E1968-11 Revision
Oct. 10, 1998 E1968-98 Revision
Nov. 10, 1998 E1968-98R03 Reaffirmation