The process is stopped when the final pore size is reached.
Thus, you would have to build a filter that had a very regular pore size of 20 or 40 angstroms.
Separation is done based on the membrane's pore size.
In materials with different pore sizes, curves can be constructed similar to Figure 7.
These are not typically used in batteries because their pore size is too small.
The smaller the pore size the lower the flow rate.
However, the pore size allows for the exchange of extracellular products.
With more work in refining the pore size, they say, it could even be used to separate one protein from another.
The pore size can be very small, down to 0.2 m or less for use in filter sterilization.
However, it is difficult to control pore size and distribution.