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	1	+Sampling methods

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	1	+Characteristics .Samples .WebHome

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	9	+The method used to separate large from small grains or particles
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	13	+= Mobile sieving =
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	15	+Sieve means a utensil consisting of a mesh (at intervals of 2mm) held in a frame, used to separate gravel from the fine fraction of soil. For sieving the following is use: each soil sample must be sieved to separate the <2 mm fraction from any gravel or larger detritus (≥2 mm). If the sample contains a large amount of soil (for example, a composite), sieving should be carried out in small batches to prevent soil loss. The sieve should be gently shaken to allow the soil to pass through. The ≥2 mm fraction that does not pass through the sieve should be collected and set aside. If soil aggregates are present in the ≥2 mm fraction after sieving, the crushing and sieving steps should be repeated. The gravel fraction (≥2 mm) from each core or composite sample must be weighed separately and this mass must be recorded.
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	17	+= Raking =
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	19	+Raking is the other method, mostly used for soil with much vegetation or with large particles like gravel and stones. So the parts removed from the soil are at least 2 mm big
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	21	+= References =
	22	+
	23	+* NPR 5741:2015
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	30	+= Sampling methods =
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	32	+[[image:Sampling methods.jpg||alt="image.jpg"]]
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	35	+|=(% scope="row" %)Image|[[Sampling methods>>https://i.ebayimg.com/00/s/NzY4WDEwMjQ=/z/74gAAOSwczlbN5fw/$_86.JPG]]
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	40	+**Contents**
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	42	+{{toc/}}
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image.jpg

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