110 / 210 Fiber Optic Oxygen Monitor - Instech Laboratories, Inc.

hydrosulfite dissolved in aqueous media will
consume O 2 rapidly, and can be used to prepare a
0% concentration. Air-saturated values for
various solvents and salt solutions can be found
in textbooks.
Calibration Data
Once you have calibrated your sensor system, the
calibration data is stored in two files. It is stored in
the OOISensors.cfg file, which is the application
configuration file. The calibration data is called from
this binary file each time you use your sensor system
and software.
Calibration data is also stored in an ASCII file (or text
file) so that you use read the data and even import it
into other application programs such as Microsoft Word
and Excel. This ASCII file is called chXFoxy.cal,
where "X" stands for the spectrometer channel ("0" for
master spectrometer, "1" for spectrometer channel 1,
"2" for spectrometer channel 2 and so on). The
chXFoxy.cal file is not used by the OOISensors
application; it is strictly for analyzing calibration data.
(If you have temperature data in this file, temperature
will be displayed as Kelvin.)
Re-calibration
FOXY probes do need re-calibration from time to
time. The following factors necessitate re-calibration:
1. If you use a FOXY probe in a harsh environment
that degrades the probe coating.
2. If you expose a FOXY probe to the LED source
for long periods of time, causing faster
photobleaching of the ruthenium compound.
3. If you re-condition your FOXY probe.
4. If you sterilize your FOXY probe with processes
such as autoclave or gamma radiation.
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