ISO 20227:2017 PDF

Scope: This document 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.

ISO 20227:2017 Referenced Document

ISO 19827:2016 Water quality - Determination of the acute toxicity to the freshwater rotifer Brachionus calyciflorus
ISO 20079:2005 Water quality - Determination of the toxic effect of water constituents and waste water on duckweed (Lemna minor) - Duckweed growth inhibition test
ISO 5667-16:2017 Water quality - Sampling - Part 16: Guidance on biotesting of samples
ISO 5725-1:1994 Accuracy (trueness and precision) of measurement methods and results - Part 1: General principles and definitions
ISO 5725-2:1994 Accuracy (trueness and precision) of measurement methods and results - Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
ISO/TS 20281:2006 Water quality - Guidance on statistical interpretation of ecotoxicity data

2017 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