Fertilizers. Sampling Recommendations for minimum mass of increment of a solid fertilizer to be taken to be representative of the total sampling unit

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

30-09-1988

Publisher

British Standards Institution

NO CONTENTS SECTION

Contains some of the theoretical background to the derivation of formulae for calculating the minimum mass of an increment and gives examples of values in tables.

When sampling is carried out on a batch of fertilizer, an increment is taken from N units. Each of these increments may be taken either by means of partial sampling devices, if their validity (absence of any particular bias) is assured, or by treating the complete item with a suitable reduction device (absence of bias).

This British Standard specifies, for the latter case, the extent of mass reduction beyond which the error in the representativity of the increment can no longer be ignored. It may also be used to establish the minimum mass of any intermediate increment during the treatment of the sample, up to analysis. Where partial sampling devices are used, this limiting mass can be much more important.

Committee	CII/37
DevelopmentNote	Supersedes 87/53554 DC. (08/2005)
DocumentType	Standard
Pages	10
PublisherName	British Standards Institution
Status	Current

BS 5551-2.9:1991	Fertilizers. Sampling Sampling plan for the evaluation of a large delivery of solid fertilizer
BS 5551-2.5:1989	Fertilizers. Sampling Method for reduction of samples of solid fertilizers
BS 5551-2.8:1991	Fertilizers. Sampling Methods for preparation of samples of solid fertilizer for chemical and physical analysis
BS 5551-2.1:1993	Fertilizers. Sampling Simple sampling method for small lots of solid fertilizer

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BS 5551-2.7:1988

Fertilizers. Sampling Recommendations for minimum mass of increment of a solid fertilizer to be taken to be representative of the total sampling unit

Table of Contents

Abstract

Scope

General Product Information

Standards Referenced By This Book

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Subcategory