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39
Analyte Subtraction
In the Analyte Subtraction method, an aliquot of sample is added to a reactant standard of known
concentration and volume. The sample partially reacts with the measured ion. The stoichiometric ratio
between standard and sample must be known. The ion concentration is then calculated using the
difference in mV potential.
To set the Reading Mode:
• Press
while in ISE Measure mode.
• Press
.
• Use
or to select the Reading Mode
option.
• Press
and use or to
highlight the desired option.
• Press
to confirm your selection or press
to cancel operation.
Temperature
This option permits the user to configure all parameters
related to ISE temperature measurements.
Temperature Source
The options are: Manual, Channel 1 or Channel 2. If no
temperature probe is detected, a manually set value will
be displayed (and logged) with the measurement. If a
temperature probe is connected to either channel, it may be
selected. The temperature measurement will be displayed
and logged with the measurement and may be used for
temperature compensation calculation if Temperature
Compensation is enabled.
Temperature Unit
Select the desired temperature unit (Celsius, Fahrenheit or Kelvin degrees) and the meter will auto-
matically convert to the selected unit.
Manual Temperature
If no temperature probe is connected, the desired temperature can be set manually. The default setting
is 25.0 °C. If the measured temperature is different, the value can be manually adjusted to obtain
an accurate ion measurement.
ISE SETUP (HI5222 only)
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