Thermo Fisher Scientific CyberScan pH 5000 - Manual (Page 113)

Instruction Manual CyberScan pH5500/ 5000
If you touched STND
8. Use the keypad to enter the value of the standard.
9. Touch enter to accept the value. The meter will accept the
standard value when it recognizes the reading as stable.
10. Repeat steps 4-7 with additional standards or steps 4-7 and 11
with a blank sample.
If you touched BLANK
11. The meter will return to the Ion measure screen and a beaker
icon labeled blank will be displayed.
Repeat steps 4-9 if the meter has not been standardized with at
least 2 standards of known ion concentration.
Measuring Ion concentration in the Direct Reading with Blank
Mode
With Auto Read on
1. Add Ionic strength adjuster to the sample.
2. Immerse the ion selective electrode in the stirring sample.
3. Touch meas. When the meter recognizes the reading as stable,
STABLE will appear on the screen. The value that appears on the
screen is the value of the sample minus the value of the blank
reading. The measure screen will fix onto this measurement and
will not deviate until meas is touched again.
4. Repeat steps 1-3 with additional sample.
With Auto Read off
1. Add ionic strength adjuster to the sample
2. Immerse the ion selective electrode into the stirring sample. The
meter will continually monitor the ion concentration value. When
the meter recognizes the reading as stable, STABLE is displayed
on the measure screen. With the Auto Read function deactivated,
the display on the measure screen will indicate any deviation in
the concentration reading.
3. Repeat steps 1-2 with additional sample.
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