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C.2.10 Calibrate Conductivity Cell
Dionex ED50A detectors shipped in June 2013 or later are not
recommended for conductivity detection. Therefore, operational screens
for the Conductivity mode are not described in this manual.
C.2.11 pH Calibration
This screen allows you to calibrate the pH reference electrode in the
amperometry cell. (See Section B.5 for cell disassembly and assembly
instructions.) The steps on the screen must be performed in sequence.
Two calibrations are required.
•
Do the first calibration at pH 7.0. With the electrode in pH 7.0 buffer
solution, verify that the
Select
•
Do the second calibration with another buffer solution of known pH;
for example, pH 10.0.
NOTE If you are using a NaCl reference electrode, select the
MEASURED pH:
WITH THE ELECTRODE IN pH 7 BUFFER,
WITH ELECTRODE IN THE 2nd BUFFER
ENTER 2nd BUFFER pH, PRESS ENTER:
SELECT THE DESIRED CORRECTION TYPE:
Help Message
Screen Field
MEASURED pH
Doc. 065551-01 6/13
and then
Enter
correction type. This adjusts the detector's signal
response for the NaCl electrode, rather than the default
AgCl reference electrode.
pH CALIBRATION
7.00
SELECT 'CAL' AND PRESS ENTER:
Figure C-27. pH Calibration Screen
Description
Reports the pH measured from the electrode.
field displays 7.0. If not, press
MEASURED pH
.
C • User Interface
Na
RDY
10.0
NONE
C-31
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