Instruction manual

Chapter 3 pH Measurement
F-72 35
Chapter 3 pH Measurement
3.1 pH Calibration Setting
This section describes the procedures to set the conditions of pH calibration.
3.1.1 Standard Solution
3.1.2 Calibration Points
1.
Tap the channel setting and the measurement
item in the MEAS screen to set "CH1" and "pH".
2. Press the CAL key to display the pH CAL screen.
3. Tap and tap "CH1 CAL SET".
pH calibration setting items are displayed.
You will see the remaining items by dragging.
4. Select items and set the conditions.
The setting procedures for each item are
explained below.
1. Tap on the right of the Standard Solution
item, and tap the standard solution in the selec-
tion screen.
The setting applies. The check mark on the cur-
rent setting item is displayed.
To cancel the settings, tap .
1. Tap on the right of the Calibration Points
item.
2. Tap or in the Calibration points setting
screen to set the calibration points.
3. Tap .
The setting applies.
Standard solutions of NIST, USA, China and
CUSTOM (other than above, or user's
designated) can be used for pH calibration. NIST
is set as default.
Up to 5 points calibration is possible.
Set the number of the calibration points.