ISO 20227:2017Published

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

Qualité de l'eau — Détermination des effets d'inhibition sur la croissance de la lentille d'eau Spirodela polyrhiza par les eaux usées, les eaux naturelles et les produits chimiques — Méthode utilisant un bioessai miniaturisé indépendant d'une culture mère

Abstract / 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.