Name: BS 6068-5.39(2005) : 2005
Brand: BSI

WATER QUALITY - DETERMINATION OF THE TOXIC EFFECT OF WATER CONSTITUENTS AND WASTE WATER ON DUCKWEED (LEMNA MINOR) - DUCKWEED GROWTH INHIBITION TEST

Published date

23-11-2012

Publisher

British Standards Institution

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Interferences
6 Apparatus
7 Reagents
8 Test organisms
9 Stock cultures and pre-cultures
10 Procedure
11 Validity criteria
12 Expression of results
13 Estimation of EC(r)[x] values for frond number and the
   second observation parameter
14 Documentation of results
15 Precision
16 Test report
Annex A (informative) Preparation of the nutrient media
Annex B (informative) Measurement of the lowest ineffective
                      dilution (LID) of a waste water -
                      A simplified evaluation for testing
                      of waste water
Annex C (informative) Suppliers of Lemna species
Bibliography

Provides a method for the determination of the growth-inhibiting response of duckweed (Lemna minor) to substances and mixtures contained in water, treated municipal wastewater and industrial effluents.

Committee	EH/3/5
DevelopmentNote	Supersedes 03/315968 DC. (01/2006) Also numbered as BS EN ISO 20079. (03/2007)
DocumentType	Standard
PublisherName	British Standards Institution
Status	Current
Supersedes	03/315968 DC : DRAFT SEP 2003

Standards	Relationship
EN ISO 20079:2006	Identical
ISO 20079:2005	Identical

ISO/IEC 17025:2005	General requirements for the competence of testing and calibration laboratories
NFT 90 337 : 96 XP	TESTING WATER - DETERMINATION OF THE INHIBITORY EFFECT ON THE GROWTH OF LEMNA MINOR
ISO 5667-16:2017	Water quality — Sampling — Part 16: Guidance on biotesting of samples
ISO 10260:1992	Water quality — Measurement of biochemical parameters — Spectrometric determination of the chlorophyll-a concentration