[SkittyDog]

> So, how many liters of seawater can in process before it needs an "electromembrane" change?

It doesn't need regular changes, because it's not a filter.

That's also why it's called an "electromembrane" and not a "filter"... Because (can you you hear me in the back) it's not a filter.

If you want technical details in how the device operates, you should probably not be consulting pop sci news articles that are written from press releases... Maybe Wikipedia has an article about it, say https://en.m.wikipedia.org/wiki/Electromembrane_extraction ?