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Soil quality — Determination of particle size distribution in mineral soil material — Method by sieving and sedimentation
A major objective of ISO 11277:2009 is the determination of enough size fractions to enable the construction of a reliable particle-size-distribution curve.
ISO 11277:2009 does not apply to the determination of the particle size distribution of the organic components of soil, i.e. the more or less fragile, partially decomposed, remains of plants and animals. It is also realized that the chemical pretreatments and mechanical handling stages in ISO 11277:2009 could cause disintegration of weakly cohesive particles that, from field inspection, might be regarded as primary particles, even though such primary particles could be better described as aggregates. If such disintegration is undesirable, then ISO 11277:2009 is not used for the determination of the particle size distribution of such weakly cohesive materials.
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