NF EN 28265 : 1994
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
WATER QUALITY - DESIGN AND USE OF QUANTITATIVE SAMPLES FOR BENTHIC MACRO-INVERTEBRATES OF STONY SUBSTRATA IN SHALLOW FRESHWATERS
09-08-2014
12-01-2013
Describes biological testing for benthic macroinvertebrates by sampling fresh waters up to one metre deep over stoney substrata. The procedures apply to the sampling of all accessible aquatic habitats in estuaries, streams and rivers where current velocities over 0,1 m/s may be expected, but the samplers, with modifications, may be used in locations of low current velocity, such as lakes and ponds. Coverage includes apparatus and diagrams.
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