BS ISO 13909-7:2002
硬煤和焦炭.机械取样.取样精度、样品制备和试验的测定方法

Hard coal and coke - Mechanical sampling - Methods for determining the precision of sampling, sample preparation and testing

2016-06

 

 

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标准号
BS ISO 13909-7:2002
发布
2002年
发布单位
英国标准学会
替代标准
BS ISO 13909-7:2016
当前最新
BS ISO 13909-7:2016
 
 
被代替标准
98/121230 DC:1998 BS 1017-1:1990 BS 1017-2:1994
适用范围
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.

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