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Rainwater vs DI water

Messages
73
Location
Worcstershire
I've always done my wfp work with untreated rainwater (off my roof at an average of 006 ppm according to my TDS meter), and the windows really shine. I've just experimented at home with DI tap water (at 000) and, sure, the windows are clean, but they don't shine as much. Or am I just imagining it?

 
You aren't the first to make this observation. I don't use rainwater so I haven't any personal experience to agree or disagree with your observations. But I once read of someone who had one tank of rainwater and another purified with  r/o and resin.

He said that you could feel the difference between the water in each tank.

Somehow, the rainwater just felt softer and he said it just seemed to clean better.

 
I clean with a mix of both ro/di and rainwater

It fills the same ibc and is great to clean with

Rainwater slips better and dries shinier imo and i much prefer to clean with it

With both mixed my tds is a combination of 2ppm from di and 6-7ppm from rainwater

I know 100% my windows will dry spotless

Rainwater is definitely better

 
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