Abstract： AS 2806.1:2003 pdf download.Aluminium ores-Sampling Part 1: Sampling procedures. lf the planned number of primary increments hasbeen iaken and the handing has not been com-pleled，addilional incremenls shall be taken tesame mass interval u...

AS 2806.1:2003 pdf download.Aluminium ores-Sampling Part 1: Sampling procedures.

lf the planned number of primary increments hasbeen iaken and the handing has not been com-pleled，addilional incremenls shall be

taken tesame mass interval until the handling operation iscompleted.

8.5cConstitution of a gross sample orsubsample

A gross sample shall comprise all the primary in-crements or subsamples,either as taken or afterhaving beon prepared individually

to a particularstage of sample preparatian and then combined inthe correct proportions.

lf the coefficient variation of the masses of primaryincrements is grealer than 20 %,the primary in-crements as taken shall not be combined into sub-samples or a gross sample，and the requirements.

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