Hi Gavin,

I am just getting into PICs, when my engineering classes will allow me.
I have been on the STAMPS list for about 2 or 3 years and I remember a
thread talking about pH.

You might check http://www.parallaxinc.com and click on "Links" button
then scroll to the bottom of the screen where it says "Search past
posts".  As I recall from the thread, lots of good information was
there.

I hope this helps.
--
James E. Merritt N0SRB          Iowa State University
jem@iastate.edu                 Center for Nondestructive Evaluation
Electrical Engineering student  x-ray tech/modeller/programmer