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ISO 20227:2017

Water quality — Determination of the growth inhibition effects of waste waters, natural waters and chemicals on the duckweed Spirodela polyrhiza — Method using a stock culture independent microbiotest ISO 20227:2017

Publication date:   Jun 15, 2017

General information

90.93 Standard confirmed   Sep 19, 2022

ISO

ISO/TC 147/SC 5 Biological methods

International Standard

13.060.70   Examination of biological properties of water

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Scope

ISO 20227:2017 specifies a method for the determination of the inhibition of the growth of the first fronds of Spirodela polyrhiza germinated from turions, by substances and mixtures contained in water or waste water, including treated municipal waste water and industrial effluents.
The test is also applicable to pure chemicals and in particular, plant protection products and pesticides.

Life cycle

NOW

PUBLISHED
ISO 20227:2017
90.93 Standard confirmed
Sep 19, 2022