ISO 9195:1992 Preview
Liquid flow measurement in open channels -- Sampling and analysis of gravel-bed material
This standard was last reviewed and confirmed in 2016. Therefore this version remains current.
Applies to surface and subsurface material having diameters of 2 mm and over. Two sampling techniques are applicable: one is to collect a definable in situ volume of material which is subsequently dealt with as a bulk sample, the second is to sample material from the surface, using one of several procedures.
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