Alcance
                            ISO 19820:2016 specifies a method for the determination of the lethal effects of toxicants to Brachionus plicatilis after 24 h or 48 h exposure.The method is applicable to the following:a)    chemical substances which are soluble or which can be maintained as a stable suspension of dispersions under the conditions of the test;b)    industrial or sewage effluents, treated or untreated, if appropriate after decantation, filtration, or centrifugation;c)    marine or estuarine waters;d)    sediment elutriates/eluates.