Foreword<br>1 Scope<br>2 Normative references<br>3 Terms and definitions<br>4 Principle<br>5 Reagents and media<br>6 Apparatus<br>7 Procedure<br>8 Validity criteria<br>9 Calculation<br>10 Expression of results<br>11 Interpretation of results<br>12 Precision<br>13 Test report<br>Annex A (informative) - Rapid screening of waste water algal<br> growth inhibition<br>Annex B (informative) - Test procedure with algae from algal<br> beads, with direct measurement of algal growth<br> in spectrophotometric cells<br>Annex C (informative) - Procedure for immobilisation of algae<br> in alginate beads<br>Bibliography