NEW BRUNSWICK SCIENTIFIC BioFlo 110 Manual To Operations page 80

B
Calibrate pH 6.52
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7. Rinse the pH electrode with distilled water, then immerse it in a pH 7.00 buffer
solution. Allow a few minutes for the system to equilibrate, as indicated by a
nearly stable Raw Input reading.
8. Press the Set Zero selector button. A highlighted edit box opens:
B
Calibrate pH 6.52
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9. Using the touchpad, key in 7.0, the pH of the buffer.
10. Reconfirm that the Raw Input reading is stable, then press the Enter key to save
the value (or press
11. Press the Set Span selector button. As above, a highlighted edit box will open in
the Set Span row.
12. Rinse the electrode with distilled water, then immerse it in a second pH buffer
solution which is several pH units below pH 7.00 (e.g., 4.00) and allow a few
minutes for the system to equilibrate, as indicated by a nearly stable Raw Input.
New Brunswick Scientific
Zero Std: 7.00
Raw Input: 5500
Zero Std: 7.00
Raw Input: 5500
Select "Reset" at any time in the Calibration
process to return to the factory-set default
Zero Standard and Span settings.
to cancel).
67
Set Zero
Set Span
Reset
Set Zero
Set Span
Reset
User's Guide