I have some Fisher 4,7 and 10 pH buffer solution. These have color added to them. Are they fine to use to calibrate the pH probe? I also have a pH 4 that does not have color added to it. I already have my probes calibrated with the Neptune solutions so i may just stick a probe in and see if it reads the solution accurately.
https://www.fishersci.co.uk/shop/pro...ion-2/10427260
Bookmarks