Sand ruler with 10 fractions
Sand ruler according to NEN 2560, ASTM 11, ISO 565, BS 410 and DIN 4188. Fractions are divided between 63, 90, 125, 180, 250, 355, 500, 710, 1000, 1400 and 2000 µ. This sand ruler is a disc made of transparent material with selected samples (standard graduations).
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080403Original :
080403
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An important quality of a soil (in a soil profile) is the grain size distribution or texture. Agricultural soil properties are greatly determined by the texture of a soil: for example the ease of tillage, the capillary conductivity of a soil, the available moisture, the permeability of a soil, compaction, rooting possibility, etc.
A sand ruler is a disc made of transparent material with standard (specimen) samples. It is an excellent indicative help in determining the particle size distribution or to estimate the granular composition.
Method
By using the sand median, it is possible to classify the sand fraction. A representative proportion of the sample to be tested is rubbed dry with the fingers in the palm of the hand. The sample is then placed in the hollow area in the center of the ruler. The average grain size is now judged by comparing the average grain size of the sample with the specimen in the ruler.