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  • BSI
    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
    Edition: 1988
    $266.02
    / user per year

Description of BS 5551-2.7:1988 1988

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.

Standard NumberBS 5551-2.7:1988
TitleFertilizers. Sampling - Recommendations for minimum mass of increment of a solid fertilizer to be taken to be representative of the total sampling unit
StatusConfirmed
Publication Date1988-09-30
Identical National Standard OfISO/TR 7553
DescriptorsMass, Sampling methods, Fertilizers, Agricultural chemicals, Agricultural materials, Mathematical calculations, Minimum, Samples
ICS65.080 Fertilizers
CommitteeCII/37
ISBN0 580 16785 2
PublisherBSI
Pages10

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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