nsBAS EN ISO 23196:2024
Water quality - Calculation of biological equivalence (BEQ) concentrations
General information
Status:Project
Number of pages:21
Adoption method:Proglašavanje
Language:engleski
Edition:1.
Realization date:17.05.2024
Forseen date for next stage code:17.07.2024
Technical committee:BAS/TC 7, Environment
ICS:
13.060.70, Examination of biological properties of water
Abstract
This document specifies the derivation of biological equivalence (BEQ) concentrations for results of in vitro bioassays which are based on measuring effects on a biological process such as enzyme induction or cellular growth. The concept described here can be used for any biological assay after the proof of its applicability.
To derive BEQ concentrations, the effect on a biological process caused by a sample – i.e. the activity of the sample – is expressed in terms of a concentration of a reference compound which results in an equivalent effect on the process. The term "sample" used in this document addresses environmental samples as well as defined mixtures and pure compounds used as test item in a bioassay. BEQ concentrations can be derived for environmental water samples, extracts of environmental water samples including tap water or solutions of pure chemicals or mixtures of chemicals.
Lifecycle
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Original document and degree of correspondence
EN ISO 23196:2023, identical
ISO 23196:2022, identical
Work material
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