Operation
18
2. Hold the meter at a 30 degree angle and let the sample flow into the
conductivity cup continuously with no aeration.
3. Push the RES key.
4. Observe or record the value displayed.
Note: If reading is lower than 10 kΩ, [- - - -] is shown. Measure conductivity for these samples.
3.7 Measure mineral/salt (MP-6p model only)
To measure mineral/salt:
1. Rinse the conductivity cup three times with the sample to be measured. This
conditions the temperature compensation sensor and prepares the cell.
2. Fill the conductivity cup with the solution.
3. Push the MIN/SALT key.
4. Observe or record the value displayed, or push UP/MS to store the reading.
3.8 Measure TDS
To measure TDS:
1. Rinse the conductivity cup three times with the sample to be measured. This
conditions the temperature compensation sensor and prepares the cell.
2. Fill the conductivity cup with the solution.
3. Push the TDS key.
4. Observe or record the value displayed, or push UP/MS to store the reading.
3.9 Measure ORP/Redox (MP-6 and MP-6p models)
To measure the ORP/Redox:
1. Remove the protective pH/ORP sensor cap. Squeeze the sides and pull up.
2. Rinse the sensor cup three times with the sample to be measured.
3. Shake the meter after each rinse to remove residual liquid.
4. Fill both sensor cups with the sample.
5. Push the ORP key.
6. Observe or record the value displayed, or push UP/MS to store the reading.
Important Note: After the test, fill the pH/ORP sensor cup with pH Storage Solution
and replace the protective cap. Do not allow the pH/ORP sensor cup to dry out.
3.10 Measure pH (MP-6 and MP-6p models)
To measure pH:
1. Remove the protective pH/ORP sensor cap. Squeeze the sides and pull up.
2. Rinse the pH/ORP sensor cup three times with the sample to be measured.
3. Shake the meter after each rinse to remove residual liquid.
4. Fill both sensor cups with the sample.
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