Before proceeding with the pH4 (red) buffer solution, please neutralize the
probe: rinse it with distilled water and wipe it with a piece of cloth.
Repeat as before. After the calibration has been carried out on the second
point, the third point can be calibrated directly, or you can exit the CAL
mode by pressing ESC (8). This takes you directly to the measuring mode.
EC calibration is identical, here only first you should switch to the
measuring range COND using the MODE button (9). Depending on the
use, the Multi-Tester should be calibrated daily before starting a
measurement session, or - when not used frequently - always before a
measurement!
Measurement
Press the ON / OFF button (6) to switch the Multi-Tester on. In the
measurement mode the display is blue. Press MODE (9) to select the
desired measurement value. Insert the sensor then into the solution or
product to be measured and wait until the value is stabilized and
appears. Now you can read the value on the display and select another
measuring value or proceed with the measurement in further liquids or
products.
However, we recommend to neutralize the sensor shortly in water between
measurements in order to avoid falsifying of results.
Clean the sensor after each measurement session with distilled water. Put
a few drops storage solution or buffer solution pH4 in the protective cap
and put on the cap.
Attention: do never store the electrode in distilled water!