Water quality. Determination of inhibition of gas production of anaerobic bacteria - General test subscription-only tariff device symbols

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BS EN 50342-7 is applicable to lead-acid batteries used primarily as a power source for the starting of internal combustion engines

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A uniform standard coding system complying with BS EN 13508-2 ensures that results from visual inspections can be compared

Water quality. Determination of inhibition of gas production of anaerobic bacteria - General test subscription-only tariff device symbols1 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