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  • BS EN ISO 20227:2017

    Current The latest, up-to-date edition.

    Water quality. Determination of the growth inhibition effects of waste waters, natural waters and chemicals on the duckweed Spirodela polyrhiza. Method using a stock culture independent microbiotest

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-09-2017

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    Foreword
    Introduction
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Principle
    5 Test organisms
    6 Growth medium
    7 Apparatus
    8 Reference chemicals
    9 Procedure
    10 Data treatment - Calculation of the growth inhibition
    11 Validity criterion
    12 Test sensitivity
    13 Test with reference chemicals
    14 Test report
    Annex A (informative) - Spirodela polyrhiza stock
            culturing for turion production
    Annex B (informative) - Sensitivity of the Spirodela
            polyrhiza microbiotest
    Annex C (informative) - Performance data
    Bibliography

    Abstract - (Show below) - (Hide below)

    Describes a method for the determination of the inhibition of the growth of the first fronds of Spirodela polyrhiza germinated from turions, by substances and mixtures contained in water or waste water, including treated municipal waste water and industrial effluents.

    Scope - (Show below) - (Hide below)

    This document specifies a method for the determination of the inhibition of the growth of the first fronds of Spirodela polyrhiza germinated from turions, by substances and mixtures contained in water or waste water, including treated municipal waste water and industrial effluents.

    The test is also applicable to pure chemicals and in particular, plant protection products and pesticides.

    General Product Information - (Show below) - (Hide below)

    Committee EH/3/5
    Development Note Supersedes 16/30331690 DC. (09/2017)
    Document Type Standard
    Publisher British Standards Institution
    Status Current
    Supersedes

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 5725-1:1994 Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions
    ISO 20079:2005 Water quality Determination of the toxic effect of water constituents and waste water on duckweed (Lemna minor) Duckweed growth inhibition test
    NFT 90 337 : 96 XP TESTING WATER - DETERMINATION OF THE INHIBITORY EFFECT ON THE GROWTH OF LEMNA MINOR
    ISO 5725-2:1994 Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
    ISO/TS 20281:2006 Water quality — Guidance on statistical interpretation of ecotoxicity data
    ISO 19827:2016 Water quality Determination of the acute toxicity to the freshwater rotifer Brachionus calyciflorus
    ISO 5667-16:2017 Water quality — Sampling — Part 16: Guidance on biotesting of samples
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