What is the flow rate of the latest Gem505 filter model?
The design flow rate is 15-20 L/hr. A higher flow rate (greater than 30 L/hr) may compromise the arsenic, iron, pathogens, and turbidity removal efficiency. A flow rate too low (less than 5 L/hr) may be inconvenient for the user. Initially, just after filter installation, the flow rate can be as high as 30 L/hr. The flow rate will drop over time, to about 15 –20 L/hr in a month or two. The World Health Organization recommends a minimum of 7.5L/capita/day for basic health and hygiene. A filter operating for 12 hours a day at 15 L/hr can produce sufficient water (180L) for a family of 24 people.
