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BS 5551-2.7:1988

$86.31

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

Published By Publication Date Number of Pages
BSI 1988 10
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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.

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.

BS 5551-2.7:1988
$86.31