Kabrhel's Index
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| English: Kabrhel's Index Czech: Kabrhelův index |
Kabrhels index is number of microbes, which passes through the sand filter. Limit is 1:7000 (it means that 1 microbe from 7000 microbes will pass).
Note: Gustav Kabrhel (1857–1939) was the founder of hygiene in the Czech Republic.
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- WikiSkripte.eu. Hygiena [online]. The last revision 2011-12-14, [cit. 2012-02-03]. <http://www.wikiskripta.eu/index.php/Hygiena>.