Ise Calibration - Thermo Scientific Orion Star series Bedienungsanleitung

ISE Technique
SE Calibration
The calibration standards should be prepared in the same ISE units as the desired
sample results . Start the calibration with the lowest concentration calibration
standard and work up to the highest concentration calibration standard . Any
reagents, such as ionic strength adjustors, should be added to samples and
standards as specified in the electrode user guide .
1 . Prepare the electrode, standards and any other required solutions for use
according to the electrode user guide .
2 . In the measurement mode, press
until the ISE icon is shown and press
press
3 . Rinse the electrode with distilled or deionized water, shake any excess water off,
blot it dry and place the electrode into the least concentrated standard .
4 . Wait for ISE icon to stop flashing . Press
is flashing, press
continue to change the digits until the meter displays the concentration value of
the standard . Once the standard value is set, press
is in the correct location .
5 . Press to proceed to the next lowest calibration standard and repeat
steps 3 and 4, working from the lowest concentration standard to the highest
concentration standard, or press
6 . The actual electrode slope, in mV per decade concentration, will be displayed in
the main field and
a . For a one point calibration, press
change the sign of the slope to negative or positive, press
the digits are blinking and the arrow icon is blinking and press
the sign of the slope . Press
b . For a two or more point calibration, the meter will automatically proceed to
the measurement mode after the slope is displayed .
EN-44
/ to change the value of the flashing digit and
will be displayed in the lower field .
Thermo Scientific Orion Star
until the arrow icon points to the top line,
until the first digit to be changed
to save and end the calibration .
and /
to return to the measurement mode .
and Star Plus Series Meter User Guide
™
to begin the calibration .
until the decimal point
to edit the slope . To
until none of
to change