Hanna Instruments HI 4321 - Manual (Page 46)

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Make sure the TDS factor has been set before taking TDS measurements (see TDS Setup section).
DIRECT MEASUREMENT
To measure the TDS of a sample using the
Direct reading mode:
• Press and then to select TDS measure mode.
• Select the Direct reading mode (see TDS Setup section).
• Proceed as for the conductivity measurement (see Conductivity
Measurement section).
DIRECT/AUTOHOLD MEASUREMENT
To measure TDS of a sample using the
Direct / AutoHold reading mode:
• Select the Direct / AutoHold reading mode (see TDS Setup
section).
• Proceed as for the conductivity measurement. (see Conductivity
Measurement section)
TDS MEASURE TDS MEASURE TDS MEASURE TDS MEASURE TDS MEASUREMENT MENT MENT MENT MENT