Sper Scientific 850037 Large Display Conductivity Pen - Manual (Page 14)

14
Salinity Calibration
1. Place the probe into deionized or
distilled water for about 30 minutes to
rinse the probe.
2. Select the NaCl standard for calibration.
3. Pour 3 cm (deep) of solution into two
separate containers (A & B).
4. Press SET to turn the pen on.
5. Rinse the probe in one of the
containers. Gently stir the probe.
6. Dip the rinsed probe into the other
container. Tap the probe on the bottom
of the container to remove air bubbles.
Let the probe stabilize to the solution
temperature (allow 15 minutes).
7. Press CAL for more than 2 seconds to
begin calibration. “CAL” and the salinity
value of the solution will flash on the LCD.
8. Press ▲ or ▼ to adjust the value on the
primary display to match the value of
the standard buffer. You can adjust the
salinity reading ± 30% from the detected
value. If the detected value and the
standard value differ by more than ±
30%, clean or replace the pen.