For water soluble contaminants, rinse probe in deionized (DI) water. If ineffective, soak probe in warm DI water with household detergent for 15 – 30 minutes.
For oil-based contaminants, rinse probe in ethanol or acetone for short (5-minute) periods.
After cleaning, rinse probe in DI water to remove residual cleaning reagents. Perform a meter calibration before proceeding with sample analysis.
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