Download Test Waters

Results and computation
Record the Oocystson the slides of input and output samples and
convert them into Oocystsper liter of sample. Live cyst reduction can
be calculated by subtracting the number of live cysts of output/L from
live cyst of input/L
The oocystinactivation is expressed as log reduction and is calculated
asLive Oocystlog reduction = Log10 (value of live oocystsin input)/ L –
log10(value of average live oocystin output)/ L. [(Count of live oocysts
in O-1+ O-2+ O-3)*1000/ (total volume of sample tested O-1+ O-2+
O-3)].
The microbiological water purifier must demonstrate 3 Log10 reduction
in the viability of Cryptosporidiumparvumoocysts.