I am searching for a filter membrane with a pore size between 5 - 10 microns that can support a flow rate of 1.65 L/s under a gravity feed (Pressure < 0.1 PSI).

Does a filter with that small of a pore diamater exist with that high of a flow rate?

So far I've been unlucky. There are plenty of 5 micron filters that have a flow rate of 1.5L/second but they usually require a pressure differential of 10 PSI.

Thanks for your help.