[sirsomething]

Hello everyone,

First of all thank you for your help.

I'd like to know if there are any ph testers for solids not diluted and where can I buy them and how much would they cost.

Thanks!

[Arkcon]

No.  But I can save you some time.  The pH of a solid is undefined.  If you can't dissolve it, the H⁺ ion activity will be zero, and you can make no prediction about what the pH might be under other situations.

They do sell rigid, slender pH probes for semisolids, such as cheese, or sturdy sharp probes for testing meat, as examples.  But the use of these things is dubious.  The measurement of pH is only reproducible and well defined for dilute aqueous solutions.  Even though they will sell them to you, and make some sort of claim to reproducibility.