Abstract： AS 1038.16:2005 pdf download.Coal and coke—Analysis and testing Part 16: Assessment and reporting of results. 4.2 Sample collection Incorrect methods of sample collection will negate all future care that is taken with subsequent operation...

AS 1038.16:2005 pdf download.Coal and coke—Analysis and testing Part 16: Assessment and reporting of results.

4.2 Sample collection

Incorrect methods of sample collection will negate all future care that is taken with subsequent operations of sample preparation

and analysis. Standard procedures are given in AS 2617. AS 4264.1. AS 4264.2 and AS 4264.3 for the sampling of coal and coke.

Special treatment of the sample within the laboratory for a particular method is detailed within the relevant Standard in the AS

1038 or AS 2434 series or associated Standards.

S ASSESSING THE ACCURACY OF TEST RESULTS

5.1 General

A single test result, or a number of test results obtained under repeatability conditions, provides no information as to the

accuracy of the result(s). To assess the accuracy, it is necessary to obtain a result. liereafier referred to as the reference

result, concurrently on a suitable reference material and then to compare that result with the certified or reference value.

5.2 Reference material

Standards Australia has prepared several reference materials. e.g. coal and coal ash, that have certified or verified

characteristics. In the absence of suitable certified or verified materials, a sample that has well accepted results because of

repeated testing over a period of time by several different laboratories may serve for validation. It is important for any such

reference material to maintain long-term stability. To minimiie matrix effects, the chemical and physical composition of the

certified reference material or other validated reference material should match. as closely as possible, that of the sample.

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