Water quality. Determination of inhibition of gas production of anaerobic bacteria - General test Ingestion-build-276583 EN 998‑2

EN 998‑2

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Why should you use BS 7851 - DAT logo application rule

This International Standard specifies a method for the determination of ammonia and other volatile amines that can be liberated from photographic processing wastes by strong alkali

Water quality. Determination of inhibition of gas production of anaerobic bacteria - General test Ingestion-build-276583 EN 998‑21 Scope This part of ISO 13641 specifies a screening method for assessing the potential toxicity of substances, mixtures, surface waters, groundwaters and wastewaters, effluents, sludges or other environmental samples by determining the production of biogas (carbon dioxide and methane) from the anaerobic digestion of sewage sludge over periods of up to 3 days. The growth rate of anaerobic bacteria is much lower compared with that of aerobic