Apera Instruments PH60 User Manual

4
5. pH Calibration
5.1 Rinse the probe in pure water and dry it.
5.2 Pour certain amount (about half volume of calibration bottles) of pH7.00 pH and pH 4.00 buffer
solutions in separate calibration bottles.
5.3 Long press to enter calibration mode; Short press to exit.
5.4 Dip the probe in pH 7.00 buffer solution, stir gently, and allow it to stand still
in the buffer solution until a stable reading is reached. When stable icon
comes up and stays on the LCD screen (as shown in Diagram 2), short press
to complete 1-point calibration and the tester will return to measurement mode.
Indication Icon will appear on the bottom left of the LCD screen.
5.5 Rinse the probe in pure water and dry it. Dip the probe into pH 4.00 buffer solution, follow the
steps in 5.1~5.4 to complete 2-point calibration. Indication icons will appear on the
bottom left of the LCD screen. If necessary, dip the probe into pH 10.01 buffer solution, follow the
steps in 5.1~5.4, to complete 3-point calibration. Indication icon will appear on the
bottom left of the LCD screen.
5.6 Notes
a) Tester can perform 1~3 points automatic calibration. *Please note that pH 7.00 or pH 6.86
buffer solution must be used to conduct 1st point calibration. Then use other buffer solution to
conduct 2nd or 3rd point calibration. Tester will recognize 5 kinds of pH buffer solutions. For
details, please refer to the following chart:
Calibration
USA Series
NIST Series
Indication icon
Recommended
1-point
7.00 pH
6.86 pH
Accuracy ≥ 0.1 pH
2-point
7.00 pH,
4.00 pH or 1.68 pH
6.86 pH,
4.01 pH or 1.68 pH
Range < 7.00 pH
7.00 pH,
10.01 pH or 12.45 pH
6.86 pH,
9.18 pH or 12.45 pH
Range <7.00 pH
3-point
7.00 pH, 4.00 or 1.68
pH,
10.01 or 12.45 pH
6.86 pH, 4.01 or 1.68
pH, 9.18 pH or 12.45 pH
Range: 0 to 14.00 pH

Apera Instruments PH60 Specifications

General

Brand	Apera Instruments
Model	PH60
Category	Measuring Instruments
Language	English