The P Hscreen - Cortexa Technology DermaLab Mini Instructions For Use Manual

Always calibrate the probe at pH 7.0 first and then at pH 4.0.
One sachet with pH4 and one with pH7 reference solution are included with the pH probe. Before
calibration, please empty the pH4 and pH7 sachet into two small plastic cups. A third plastic cup
with tap water should be prepared for cleaning the probe before and in between the calibrations.
Note: Before dipping the probe in each calibration solution, it must be cleaned (see above).
The calibration is done by dipping the probe in the cup with a reference pH 7 solution and press-
ing the Calibrate pH7 button in the top right corner of the pH screen. The pH7 Calibrate button will
then show an hourglass
hourglass disappears, meaning that calibration has been completed.
This shall be followed by dipping the probe in the cup with a reference pH 4 solution and pressing
the Calibrate pH4 button and wait for the button to get back to its original state.
Please note each calibration can take up to 20 seconds.
After calibration, the calibration values are stored in the DermaLab and will be used until the next
time a calibration is performed.
Between the 2 calibrations and after the calibration the probe tip should be cleaned in the cup with
tap water.
11.4 The pH screen
Up to eight pH measurements can be made with the average updated for each measure.
Each measurement is done by the following steps:
1. Take the pH probe out of its holder and out of the storage chamber.
2. Wipe the tip of the probe gently to remove the remains of the storage buffer solution.
3. Wet the probe in a cup of sterile water.
4. Wipe the tip of the probe once more to remove excess sterilized water, but make sure the
probe is still wet at the end of the tip.
5. Apply the probe to the skin and press Start.
6. The measurement result will be written in gray color on the screen until the measurement
has stabilized. Upon completion, the measurement color changes to white.
7. Remove the probe and insert it into the storage chamber and place it back in its probe
stand with the tip fully covered by the storage buffer solution.
If multiple measurements are made in a short time, then only steps 3 to 7 are needed for each
measurement as long as the probe is placed in its holder after all measurements have been
done.
during calibration. Keep the probe in the reference solution until the
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