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5. Millivolt Calibration
This calibration procedure is only applicable for calibrating a Redox
sensor in +229mV ZoBell solution.
A “
” in place of the decimal point indicates that the mV readout is not
calibrated, or a past calibration has failed. The “
” will be removed once
a one-point mV calibration has been successfully performed.
5.1 Calibration
1. Switch the
Aqua-DP
on.
2. Select mV Mode (see section 2).
3. Plug the ORP sensor into the BNC socket (this is the metal socket).
Automatic temperature compensation is not applicable to mV mode,
so it is not necessary to connect the Dissolved Oxygen sensor.
4. Remove the wetting cap from the ORP sensor.
5. Rinse the ORP sensor in distilled water and blot dry.
6. Ensure that you are using the buffers which have been selected for
automatic buffer recognition. See section 8 for a detailed explanation.
7. ZoBell Redox standard can be made with a 1:1 mixture of Part A and
Part B. 10mL of each should suffice. This solution pr229mV
of Redox potential.
Caution: ZoBell solution is poisonous and
should be handled with care.
