Rupert (W.Yorkshire) wrote:
"Emery Davis" wrote in message
...
Hello all,

Does anyone have a line on a working pH meter, hopefully available
online from UK or EU sources? I believe I've got a fair variation in the
garden and am interested in finding out in detail.

On a related note, any idea about the pH of coffee grounds? Good
for disposing around plants yes, but OK for acidophiles?

Thanks in advance,

-E

Posting from (finally) cold Normandy. At least the wind has calmed,
only 40 mph today!

--
Emery Davis
You can reply to ecom
by removing the well known companies

Speaking as someone who has broken dozens of pH metre electrodes I would
advise to buy something specifically designed for the agri market.
Regardless of what you buy it is essential to calibrate the thing
,regularly, using known standards.
You can Google as well as me (probably better) but this one is perhaps the
type of thing you need.

http://www.hannainst.co.uk/acatalog/... ectrode.html

I don't know about the pH of coffee -suppose it depends on the milk and
sugar you put in. Perhaps you can tell us when you get your new toy:-)

From what I've read, although coffee itself is acidic, the used grounds
are generally around neutral.