Instruction manual

19
7. PROBE CARE AND MAINTENANCE
Under typical operating conditions, the probe will need to be replaced every 6 to 12
months. In extreme applications, the probe may wear out sooner. Proper care and
maintenance will help you receive the maximum probe life and ensure more accurate
readings.
Keep the probe clean. Before use, rinse the probe twice. For the best accuracy, soak your
probe in electrode storage solution, pH 4.0 buffer, or tap water for at least 5 to 10 minutes
before calibration.
Gently swirl the probe in the solution while you take readings. Tap the probe gently against
the bottom and sides of your container to remove any air bubbles, which may interfere with
accuracy.
Clean the probe thoroughly by immersing it in an agitated mild detergent bath. To clean the
conductivity cell, use a cotton swab soaked in isopropyl alcohol and clean the steel pins.
Wipe the steel pins with a soft tissue paper. DO NOT wipe the pH bulb with tissue as it may
cause static build-up. After cleaning the probe, wash the probe with deionized or tap water
before storing it. Recalibrate the meter after cleaning the probe.
Do not strike the probe against any hard surface. Do not immerse the probe in oily solutions.
Store the probe in its cap filled with electrode storage solution. To order a replacement probe
or electrode storage solution, see “Accessories” section on page 23 - 24.