I.S. 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 (ISO 20227:2017)
Hardcopy , PDF
English
01-01-2017
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
National Foreword
European foreword
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
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