Description
What Is a pH 4 Buffer Solution?
pH4 is used whenever the pH is expected to be slightly acidic.
This buffer value is typically used in water purification plants and in the food industry.
Insert pH probe in cup, wait for reading to settle and calibrate zero point (i.e. pH7)
Rinse probe with distilled water (or pH4 buffer) and dry with paper towel.
Decant a small amount of pH4 buffer into a new separate cup.
Insert pH probe in cup, wait for reading to settle and calibrate slope point (i.e. pH4)
