The issue with pH meter slope
Thread Content
I’ve never used a pH meter before. The pH meter purchased by our small company was made by a small manufacturer, and its instruction manual was incomplete. I read that calibration is necessary; I calibrated it to give values of 6.86 and 9.18. I heard that by using these two values, it’s possible to calculate the slope, and if that value is over 90%, the meter can generally be used. But I don’t know what the formula is, and how to calculate it. Please ask the experts for guidance
Once it’s calibrated, just use it; the device calculates the slope internally, and that’s none of your business. When it came to electrodes that required manual adjustment of the slope, they were discarded
For the two-point form equation in middle school mathematics, calculate the slope and intercept; only by entering both values into the calculator can it determine the correct value.
Difference in current values during calibration divided by difference in pH value