Hanna Instruments HI 84442 - Manual (Page 20)

20
The temperature has an effect on pH. The calibration buffer solutions are affected by temperature
changes to a lesser degree than normal solutions. During calibration the instrument will
automatically calibrate to the pH value corresponding to the measured or set temperature.
During calibration the instrument will display the pH buffer value at 25 °C.
pH BUFFER TEMPERATURE DEPENDENCE
P M E T S R E F F U B H p
C ° F ° 1 0 . 4 0 3 . 8 1 0 . 0 1
0 2 3 1 0 . 4 8 4 . 8 2 3 . 0 1
5 1 4 0 0 . 4 4 4 . 8 4 2 . 0 1
0 1 0 5 0 0 . 4 1 4 . 8 8 1 . 0 1
5 1 9 5 0 0 . 4 7 3 . 8 2 1 . 0 1
0 2 8 6 0 0 . 4 3 3 . 8 6 0 . 0 1
5 2 7 7 1 0 . 4 0 3 . 8 1 0 . 0 1
0 3 6 8 2 0 . 4 7 2 . 8 6 9 . 9
5 3 5 9 3 0 . 4 4 2 . 8 2 9 . 9
0 4 4 0 1 4 0 . 4 1 2 . 8 8 8 . 9
TITRANT PREPARATION
- Take 10 mL HI 84442-50 titrant solution (accurate measured) and add to the clean 100
mL white bottle.
- Add 90 mL of distilled water.
- Mix carefully.
Use new obtained titrant on the further titrations.