by Salmo » Sun Nov 04, 2012 1:04 pm
Thing with pH meters is that they should idealy be calibrated before each use,so you would need to get some buffer tablets as well.
These are available at different pH values,so you need to get some close to the range you expect your product to be.
They are then dissolved in distilled water up to a specified volume & temperature & used to calibrate the meter.
Buffer soln doesn't store well & again should idealy be made up fresh each time.
If you don't calibrate the meters properly they will give results all over the show.
Give a man a fish,and you feed him for a day.
Teach a man to fish,and you won't see him again for the rest of the season.