[Dave Garrett]

Have a 40/40 system anyone know anything about PH levels had mine tested by a lab Calcium good Conductivity good PH came in at 5.3 very acidic will this affect finish can i raise PH

[Perfect Windows]

There is CO2 dissolved in your pure water.  That turns it into mild carbonic acid.  There is CO2 dissolved in every bit of water you see that isn't distilled and kept out of contact with air.

It won't do any harm at all,

Vin

[dd]

Purified water is slightly acidic. This means it cleans a bit better but also it is not too kind on wooden surfaces. Having said that I do clean quite a lot of wooden windows with it.

[Perfect Windows]

Certainly no worse than rain: (Wikipedia says) The pH of rain varies, especially due to its origin. On Americas East Coast, rain that is derived from the Atlantic Ocean typically has a pH of 5.0-5.6; rain that comes across the continental from the west has a pH of 3.8-4.8; and local thunderstorms can have a pH as low as 2.0

[Dave Garrett]

Thankyou

[richard jagger]

I would not worry about acid water it does not play a role is window cleaning.Once you have purified water most of the p/h will be about 7 am
s most of the pollutants that  causes acid will be removed. If water was p/h 2 we could not drink it.

[Perfect Windows]

I would not worry about acid water it does not play a role is window cleaning.Once you have purified water most of the p/h will be about 7 am
s most of the pollutants that  causes acid will be removed. If water was p/h 2 we could not drink it.

I try not to enter into disagreements on this site any more but I have to say that in almost every respect this post is factually incorrect.

Once purified the pH will NOT be about 7.  All that will be left dissolved in it is CO2, which will make it acidic.

Accurately though, if water was pH2, we certainly could not drink it.  However, dissolved CO2 cannot be sustained at a level high enough to give a pH of 2 except under special circumstances, so that's not really a concern.

Vin

[Spruce]

I can't remember what the correct PH level of the water in our swimming pool overseas was to be ideally (I'm sure it was around 7 - 7.5), but we had the add acid sometimes to keep it correct - it never become too acidic.

From what I remember, the chlorine we added every evening worked more efficiently if the PH levels were correct.

If this is so, then the way I see it is that the water companies are the only ones who would need to worry about PH levels, not us. I have never seen a warning anywhere about the correct PH levels for an r/o to work properly.

But Vin is the man who knows all about this stuff - not me.