does anyone have a ph tester (or what ever is called) circuit?

[delounge]

must be simple
with some kind of explaination

thanks for your help


sorry if i have double posted

 

[N. Thornton]

must be simple
with some kind of explaination

thanks for your help

Hi

Most basic ones are just 2 dissimilar metals, one as each electrode,
plus a small meter. Thats it. Cost a tenner from garden centres, but
you should be able to make one from junk if you want.

Regards, NT

 

[Dr Engelbert Buxbaum]

must be simple
with some kind of explaination

The explanation you can find in any textbook on general chemistry, in
your local library.

As to buying an instrument, that depends on the precission you require.
They start with cheap soil pH-meters from a garden centre, and end at
4-figure laboratory instruments. Also, electrodes can be solid state
(ISFET) or glas-electrodes (which require a lot more care).