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If you need to pause the test, click the "Stop" button. Click ‘Return’ to stop the current
operation and return to the menu selection interface. At the end of the test, the
instrument will display the calculation result of the set parameters to the interface.
Test results are automatically stored in history.
Click "retest" to return to the pure water calibration interface. Click ‘Return’ to return to
the menu selection interface. 5.0 Click "History Data" to enter the history record
interface
