The BRITA water filter does not completely eliminate limescale from standard tap water. The ION exchange pearls found inside the BRITA Maxtra+ water filters, as well as all of the latest BRITA water filters, help to significantly reduce limescale.
Limescale and its constituents are not removed by Brita Pitchers. It does, however, prevent limescale from forming.
Reverse Osmosis filters can completely remove limescale, but they also remove all of the beneficial minerals like calcium, magnesium, bicarbonates, sodium, and others.
TAPP Water filters are a better alternative to Brita for reducing limescale.
Remember that it will remove some of the calcium and magnesium minerals that cause hard water, as well as a few other things.
TDS will be reduced.
So, if you use Brita water in a kettle, it will have a lot less limescale than if you use regular tap water.
However, it will not remove all minerals, nor will it be able to remove limescale.