Allotment Gardening Advice Help Chat

Growing => Grow Your Own => Topic started by: Lardman on May 08, 2011, 10:59

Title: Water pH
Post by: Lardman on May 08, 2011, 10:59

Now I actually have some rain water I thought Id test its pH.

One of these tubes is tap water the other rain water. I've misplaced the colour chart  ::) but Im pretty sure that the rainwater has a higher pH than the tap  :unsure:

Title: Re: Water pH
Post by: JayG on May 08, 2011, 11:27

You really need to find the chart Lardman!  ::)

I can't think of anything that normally dissolves in rainwater (CO2, oxides of sulphur and nitrogen) which would make it anything other than (slightly) acidic, unless it has been collected from an area containing free lime (new(ish) cement is a possibility.)

Title: Re: Water pH
Post by: Yabba on May 08, 2011, 14:28

Scroll down ;) @link ph colour chart (http://www.purelifestore.com/pH-Scale-N-Your-Body.html)

¥

Title: Re: Water pH
Post by: gillie on May 08, 2011, 17:42

Our 'rainwater' is highly alkaline, more so than our hard tap water.

We think the reason is because it is collected off our cement tiled roof.  The tiles are pretty old but it does not seem to make any difference.