Thermo Scientific Orion Dual Star User Manual page 59

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10. Wait for the reading to stabilize. When the reading is stable, press the f2 (yes) key.
11. Use the numeric keypad and decimal key to enter the volume of the first increment of
standard, in mL, to be added to the sample and press the f2 (accept) key.
12. Add the first increment of standard to the sample and press the f2 (yes) key.
13. Wait for the reading to stabilize. When the reading is stable, press the f2 (yes) key.
14. Use the numeric keypad and decimal key to enter the volume of the second increment of
standard, in mL, to be added to the sample and press the f2 (accept) key.
15. Add the second increment of standard to the sample and press the f2 (yes) key.
16. Wait for the reading to stabilize. When the reading is stable, press the f2 (yes) key.
17. The meter will display the result of the double known subtraction. Press the f3 (log/print) key
to save and end the double known subtraction, export the data to the data log and export
the data to a printer or computer, if a printer or computer is connected to the meter and
enabled in the setup menu.
Note: Press the f1 (escape) key to return to the measurement mode without saving the double
known subtraction.
18. Press the f2 (next) key.
19. To perform a double known subtraction using the values that were entered for the previous
double known subtraction, press the f2 (yes) key. To perform a double known subtraction
and enter new values, press the f3 (no) key. To end the incremental technique and return to
the measurement mode, press the f1 (escape) key.
Incremental Techniques
Orion Dual Star pH/ISE Benchtop Meter User Manual
Section 6
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