- 17 -
7.3
Sample Test
Screw off the storage bottle. Rinse the electrode with pure water. Shake off excess water or blot-dry with
clean tissue or kimwipe. Stir the electrode for a few seconds after it’s dipped into the sample solution and
then hold it still. Wait for the reading to get fully stabilized ( appears and stays). Then save the
measurement by pressing .
Hold to switch measurement unit:
(TDS) → (Salinity) → (Resistivity)→ (Conductivity).
Release the button when you make a selection.
7.4
Conductivity Electrode’s Maintenance
1)
Always keep the conductivity electrode clean. Before taking a measurement, rinse the electrode in
pure water. It is recommended to rinse it again in the sample solution. When submerge the electrode
in solution, stir the solution briefly to eliminate air bubbles and allow it to stay until a stable reading
is reached. Conductivity electrodes are usually stored dry. When not in use, store the conductivity
electrode in pure water.
2)
The sensor of 2301T-S conductivity electrode is coated with platinum black to minimize electrode
polarization and expand measuring range. The platinum black coating adopted our special
processing technology, which improves the electrode performance and the firmness of the coating.
If the platinum black electrode is stained, gently clean the electrode with soft brush in warm water
containing detergent or alcohol.
7.5
Notes about Conductivity Calibration
1)
This meter has a unique one-point calibration function, to choose the standard calibration solution
that’s close to your sample’s conductivity. In general, the most common calibration solution is
1413μS/cm. Use the equipped 2301T-S conductivity electrode (K = 1.0). Please choose the
calibration solution according to the Table (6-1).
2)
The conductivity electrode has been calibrated before meter leaving factory. In general, user can
directly use it.
3)
We recommend calibrating the electrode once every month. It is necessary to perform calibration
when replacing a new conductivity electrode.
