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ASTM D 2013 Document Information:
Title
Standard Practice for Preparing Coal Samples for Analysis
ASTM International
Publication Date:
Jun 1, 2007
Scope:
This practice2 covers the reduction and division of
gross or divided samples, and the preparation of composite samples,
up to and including the individual portions for laboratory
analysis.
Reduction and division procedures are prescribed for coals of
the following groups:
Group A includes coals that have been cleaned in all
sizes.
Group B includes all other coals. Unknown coals are to
be considered under Group B.
Group A allows smaller weight laboratory samples to be retained
than Group B. These lower weights may be used for particular coals
if they have been shown, by using the procedures of Annex A1.2, to
give a sample preparation and analysis variance which is no more
than 20 % of the total analysis variance.
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.
The values stated in SI units are to be regarded as standard.
The values given in parentheses are provided for information
purposes only.
2 For more detailed explanation of this practice see
Keller, G. E., "Determination of Quantities Needed in Coal Sample
Preparation and Analysis," Transactions, Vol 232, 1965,
pp. 218-226.
Keywords:
- coal
- composite
- division
- reduction
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