103.2 Sample measurementPlace the conductivity sensor in the sample and press button-Read to start the measurement. Themeasurement icon appears on the display. The measurement icon is blinking duringmeasurement and the display shows the conductivity of the sample.When reach endpoints (auto endpoint or manual endpoint), you can record the result.Stability criterion for conductivity measurement: The sensor input signal of the meter may notchange by more than 0.4% from the measured average conductivity of the probe in 6 seconds.3.3 TDS and Salinity measurementTo perform a TDS or salinity measurement, follow the same procedure as for a conductivitymeasurement. Press button-Mode to switch between conductivity and TDS measurement mode.3.4 Using the memory3.4.1 Storing a readingThe STARTER 3100C can store up to 99 endpoint results. Press button-Store when the measurement reaches endpoint. M01 indicates that one resulthas been stored.If you press button-Store when M99 is displayed, FUL displays to indicate the memory is full. Tostore further data you will have to clear the memory. (See 3.4.3)3.4.2 Recalling from memory Press and hold button-Recall to recall the stored values from memory when the currentmeasurement reaches endpoint. Press button-up or button-down to scroll through the stored results. R01 to R99 indicateswhich result is being displayed. Press button-Exit to exit.3.4.3 Clearing the memory Pressing button-up or button-down to scroll through the stored results until “MRCL” appears. Press button-Read, CLr blinks;Now we can two choices: Press button-Read to confirm the deletion of all the stored data. Press button-Exit to return to the measurement mode without deleting the memory.