AS 2806.5-1994

1 - AS 2806.5-1994N ALUMINIUM ORES-SAMPLING - METHODS FOR CHECKING THE PRECISION OF SAMPLING
4 - PREFACE
4 - CONTENTS
5 - 1 SCOPE
5 - 2 REFERENCED DOCUMENTS
5 - 3 NOTATION
5 - 4 GENERAL REQUIREMENTS
5 - 4.1 General
5 - 4.2 Number of lots for experiment
5 - 4.3 Number of increments and number of gross samples
5 - 4.4 Sample preparation and measurement
5 - 4.5 Replication of experiment
6 - 5 METHOD OF EXPERIMENT
6 - 5.1 Duplicate samples
6 - 5.2 Sample division and testing
6 - 5.2.1 Division-testing Type 1 (see Figure 2)
6 - 5.2.2 Division-testing Type 2 (see Figure 3)
6 - 5.2.3 Division-testing Type 3 (see Figure 4)
6 - 6 ANALYSIS OF DATA
6 - 6.1 General
6 - 6.2 Division-testing Type 1
10 - 6.3 Division-testing Type 2 (see Figure 3)
11 - 6.4 Division-testing Type 3 (see Figure 4)
12 - 7 INTERPRETATION OF RESULTS AND ACTION
12 - 7.1 Interpretation
12 - 7.1.1 Data containing no rogue results
12 - 7.1.2 Data containing rogue results
12 - 7.2 Action
13 - 8 SAMPLING DATA AND CALCULATIONS
14 - APPENDIX A - NOTATION USED IN THE DETERMINATION OF PRECISION
15 - APPENDIX B - EXAMPLE FOR SETTING OUT TYPICAL SAMPLING DATA
15 - B1 SCOPE
15 - B2 COMMENT ON DATA

Specifies methods for checking the precision of sampling of aluminium ores being carried out in accordance with the methods prescribed in AS 2806.1, expressed in terms of standard deviation.

This Standard specifies methods for checking the precision of sampling of aluminium ores being carried out in accordance with the methods prescribed in AS 2806.1, expressed in terms of the standard deviation.NOTE: These methods may also be applied for checking the precision of sample preparation procedures carried out in accordance with the methods given in AS 2806.3.

First published as AS 2806.5-1994.