appropriate semi static (static-renewal) conditions. The test duration is 28 days. The daily food ration is based on initial fish … weights and may be recalculated after 14 days. The study report should include the concentration measurement of the test …

quantify substance-related effects on vegetative growth over this period based on assessments of selected measurement variables …. The limit test corresponds to one dose level of 100 mg/L. This study includes measurement of pH, light intensity …, concentrations of the test substance, the counting of the frond number and measurement of at least one other variable (total frond …