3.3. E. coli deactivation
Two tests to assess E. coli deactivation under natural sunlight and using the manufactured system were conducted
on separate days. In both cases, fixed volume of 1.25 L was used (i.e. zero mass flow rate) and the system was
orientated at 33o, which is an optimal angle for solar radiation collection in Adelaide.
The first test, conducted on the 18th of September, 2013, had an initial E. coli concentration of 2.3