palintest Green Drop Kit Instructions Manual page 41

4.3.2 Preparing the Meter for Calibration
Before starting calibration the meter must be in the
correct mode. The temperature and % Saturation
calibration must be done first before performing the
mg/L (ppm) calibration.
In % Saturation, the meter is able to perform either
a one point calibration or a two point calibration. For
one point calibration, it is recommended to perform
a 100% Saturation calibration in saturated air.
For a two point calibration, you can calibrate for
100% Saturation in saturated air and 0% Saturation
using a zero oxygen solution (PT 125/3). The meter
will take several minutes to reach 0% Saturation
value after submersion into the solution.
For more accuracy it is recommended to enter
barometric pressure and salinity values.
Note: The factory calibrated default value is 760
mm Hg or 101.3 kPa barometric pressure (sea
level).