42 of 52 people found the following review helpful
Makes hard water neutral,
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This review is from: BRITA MAXTRA Water Filter Cartridges - 4 Pack (Kitchen & Home)
Where I live - Twickenham- the water is very hard (I measured it as having a ph of 8.5 yesterday). This isn't unhealthy as such, but it makes limescale build up in the kettle, and from a gardening point of view makes it difficult for plants to get any nutrients from the water when it's that extreme.
These filters make it a lot better, reducing it to an almost neutral reading of 7.2 - which will make my kettle last much longer. Tea, coffee and food all taste better when using them.
They're meant to last for 30 days according to the literature, but I had one working constantly for 2 months without too much deterioration when I was hard up.
Really worth going to the trouble of purchasing - you'll never go back to straight tap water again!
It will also prolong the life of your water-based kitchen devices like the kettle or the espresso machine if you only use water filtered through the jug first.