Some ion-selective electrodes can be expensive (starting from $500). Is there any relatively inexpensive do-it-yourself alternatives that would still give very accurate results? How does one make an ion-selective electrode?


Ion selective electrodes are a group of electrodes that are very different from each other.

The common bits are, a selective membrane, a "sensing" electrode and a reference electrode to measure against.

The details of the membrane and sensing electrode depend highly on what selective electrode you are trying to build.

Here is an old patent on a Cl selective electrode for reference: http://www.google.com/patents/US3740326

Regarding getting accurate results with a DIY: this really depends on which electrode you are trying to build. In the Cl example, I don't see any reason why a DIY would perform worse.


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.