Chapter 3 Ph Measurement; Ph Calibration Setting; Standard Solution - Horiba Scientific LAQUA F-73A-S Instruction Manual

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

Buffer group
Standard
NIST
NIST2
USA
China
36
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
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.
Standard solutions of NIST, NIST2, USA, China
and CUSTOM (other than above, or user's
designated) can be used for pH calibration. USA
is set as default.
1.
Tap
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
pH value at 25C each buffer solution
pH2 pH4 pH7
1.679 4.008 6.865
1.679 4.008 6.865
1.679 4.008 7.000
1.680 4.003 6.864
and tap "CH1 CAL SET".
on the right of the Standard Solution
pH9 pH10

9.180 12.454

10.011 12.454

10.011 12.454

9.182 12.460
.
pH12