Dear all,
I have learned that a common Ag/AgCl electrode should not be used with
solutions containing Tris (what buffer else?), proteins, some other, due
to the contact of silver to these components - precipitation, I believe.
I have learned a Ross type electrode can overcome this problem (due to
double junction used?). It would have other advantages, like stability,
response time, etc.
As I must buy a new electrode, for solutions we use to work day by day
to produce and crystallize proteins, I wonder what type of electrode can
be suitable and, of course, cheaper.
Then I came to learn that are "double junction" Ag/AgCl electrodes that
would be compatible with "our material/samples".
So, questions:
a) What are electrodes compatible with "our samples" - of course cheaper
would be preferable and you might want to suggest models.
b) I have some idea, but it would be nice to have a deeper understanding
of these electrode types, common one, Ross type, what are the buildings
of "one junction" and "double junction", if possible with all redox
pairs involved - should you have suggestion of literature/websites for
that. One calls (the piece/probe) electrode, but it should contain at
least two formal electrodes in the assembly.
Electrochemistry on.
Thanks,
Jorge
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