Hi I have recently bought a digital pH meter to use for brewing and I hope someone has knowledge on making your own standard pH solutions for calibrating pH meters.
My idea is this; a very small amount of standard pH test solution came with my meter to calibrate it so I want to make a large amount of my own solution.
I want to mix some distilled water with an arbitrary amount of star-san and measure the pH very accurately with my meter. Now if I keep this solution in a glass bottle I don't see any reason it should change pH if left alone. It doesn't matter what exact pH my starsan solution comes out to as long as I write that number down I can always calibrate my meter to that value. Anyone see any problems with this??
Although before anyone responds I will point out the obvious problem that if I continue to make solutions off of previous homemade solutions the accuracy will begin to drift no matter what I do. So I will just say now I plan on making around a quart of the solution which will last me nearly forever if the initial idea works.
Thanks to anyone who answers!
My idea is this; a very small amount of standard pH test solution came with my meter to calibrate it so I want to make a large amount of my own solution.
I want to mix some distilled water with an arbitrary amount of star-san and measure the pH very accurately with my meter. Now if I keep this solution in a glass bottle I don't see any reason it should change pH if left alone. It doesn't matter what exact pH my starsan solution comes out to as long as I write that number down I can always calibrate my meter to that value. Anyone see any problems with this??
Although before anyone responds I will point out the obvious problem that if I continue to make solutions off of previous homemade solutions the accuracy will begin to drift no matter what I do. So I will just say now I plan on making around a quart of the solution which will last me nearly forever if the initial idea works.
Thanks to anyone who answers!