Variationskoefficienten for de gennemsnitlige specifikke væksthastigheder i hele testperioden i replikate kontrolkulturer må ikke være over 7 % i test med Pseudokirchneriella subcapitata og Desmodesmussubspicatus.
The coefficient of variation of average specific growth rates during the whole test period in replicate control cultures must not exceed 7 % in tests with Pseudokirchneriella subcapitata and Desmodesmussubspicatus.