Hi
I'm going through storage solution for my ph pen pretty rapidly though it has remained accurate.
I'm wondering if anyone uses a pen that doesn't require to be stored in solution. I believe they do exist but can't easily find with a google search. What are the electrodes made of? Tia
I'm going through storage solution for my ph pen pretty rapidly though it has remained accurate.
I'm wondering if anyone uses a pen that doesn't require to be stored in solution. I believe they do exist but can't easily find with a google search. What are the electrodes made of? Tia
