DS DS/EN ISO 9391
DS DSEN SO 9391 1996-MAR-28 Water qualty - Samplng n deep waters for macro-nvertebrates - Gudance on the use of colonzaton qualtatve and quanttatve samplers
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This standard provides guidance on the use of colonization samplers and the sampling of macro-invertebrates using qualitative and quantitative samplers for deep rivers.