PHscan40
Temperature Compensation
For better accuracy, we recommend to enable the manual temperature compensation for measurement and calibration. The tester will calculate
the pH slope with inputted temperature and shows the temperature compensated readings.
1. Press and hold the
Cal
key to enter the setup menu.
2.
Press the
Enter
key until the display shows
/
or
/
.
3.
Press the
Cal
key, the tester enters the temperature setting mode.
4.
Press the
Cal
key again to modify the temperature value.
5.
Press the
Enter
key to save and press the
Meas
key to return to the pH measurement mode.
pH Calibration
The
PHscan40 tester allows 1 to 3 points calibration, we recommend that you perform at least 2 points calibration for accurate measurement,
the tester will automatically recognize and calibrate to following standard buffer values.
USA standard buffers
pH
4.01, 7.00, 10.01
NIST standard buffers
pH
4.01, 6.86, 9.18
Single point calibration should only be carried out with pH
7.00 or 6.86, otherwise calibration will not be accepted.
For better accuracy, we recommend calibrating the tester regularly. DO NOT reuse the buffer solutions after calibration, contaminants in solution
will affect the calibration and eventually the accuracy of the measurement.
Single Point Calibration
Make sure that you have selected 1 point calibration in the setup menu.
1.1 Press the
Cal
key, the tester shows "pH
7.00/CAL 1".
1.2 Rinse the electrode with deionized water and place into the pH
7.00 buffer solution. Stir the electrode gently.
1.3 Press the
Enter
key to begin the calibration. When the reading has stabilized, the display will show "End". Calibration is completed.
