Efficiency of chlorine and UV in the inactivation of Cryptosporidium and Giardia in wastewater.

PLoS One · 2019 · PMC6513095 · PMID 31083664

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may be significantno p-value reported

In conclusion, an increase in exposure time may be significant up to a threshold, in this case, at 100 minutes for 5 ppm and 50 minutes for 0.5 ppm and 2 ppm, after which increase in exposure time may not have any appreciable reduction in viability.

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