BS ISO 13909-7:2002
Hard coal and coke - Mechanical sampling - Methods for determining the precision of sampling, sample preparation and testing

Standard No.

BS ISO 13909-7:2002

Release Date

2002

Published By

British Standards Institution (BSI)

Status

Be replaced 2016-06

Replace By

BS ISO 13909-7:2016

Latest

BS ISO 13909-7:2016

Replace

98/121230 DC:1998 BS 1017-1:1990 BS 1017-2:1994

Scope

In this part of ISO 13909, equations are developed which link the variables which contribute to overall sampling precision. Methods are described for estimating overall precision and for deriving values for primary increment variance which can be used to modify the sampling scheme to change the precision. Methods for checking the variance of sample preparation and testing are also described.

BS ISO 13909-7:2002 history

• 2016 BS ISO 13909-7:2016 Hard coal and coke. Mechanical sampling. Methods for determining the precision of sampling, sample preparation and testing
• 2002 BS ISO 13909-7:2002 Hard coal and coke - Mechanical sampling - Methods for determining the precision of sampling, sample preparation and testing

BS ISO 13909-7:2002 Hard coal and coke - Mechanical sampling - Methods for determining the precision of sampling, sample preparation and testing has been changed from BS 1017-2:1994 Sampling of coal and coke - Methods for sampling of coke.