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Hydrogen Technologies Standards form the basic framework for market ramp-up
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Climate change Standards and specifications support climate targets
More information
Smart Farming Standards and specifications are drivers for the digitalization of agriculture
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Standards [CURRENT]

BS EN ISO 20227
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

Title (German)

Wasserbeschaffenheit. Bestimmung der wachstumshemmenden Wirkung von Abwässern, natürlichen Wässern und Chemikalien auf die Wasserlinsenart Spirodela polyrhiza. Verfahren mittels Stammkultur unabhängigem mikrobiologischem Test

Edition 2017-09-01

Original language English

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Hydrogen Technologies Standards form the basic framework for market ramp-up

Climate change Standards and specifications support climate targets

Smart Farming Standards and specifications are drivers for the digitalization of agriculture

BS EN ISO 20227 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

Want to learn more?

BS EN ISO 20227
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