Performing 1-Point Calibration - OHAUS STARTER 2100 Manual De Instrucciones

EN-10
5 ° C 1.67
10 ° C 1.67
15 ° C 1.67
20 ° C 1.68
25 ° C 1.68
30 ° C 1.68
35 ° C 1.69
40 ° C 1.69
45 ° C 1.70
50 ° C 1.71
4.1.2

Performing 1-point calibration

Calibration: pH electrodes need to be calibrated with pH standard buffer solutions before a
proper pH measurement can be made. Calibration is to display the correct pH value when the
meter receives the mV value signal from the pH electrode.
Slope: the linear coefficient between mV and pH according to theoretical value (e.g. -
59.16mV/pH @ 25 ° C which means 100% slope);
Offset: the mV value when pH value is 7.00. (Theoretical value is 0 mV);

Begin by ensuring the meter is plugged in, the electrode is properly attached and the meter is
powered on by pressing

Place the pH electrode in the prepared buffer solution, stir for approximately 5 seconds and
wait for an additional 30-60 seconds.

Press button-
measurement icon

When the reading is stable (normally the reading does not change in 5s), press button-
to lock the reading and finish 1 point calibration. The buffer value (e.g. pH 7.00)
with the temperature is displayed on the screen; the meter can recognize the buffer
automatically (auto buffer recognition).
The 1-point calibration is finished; now we have 3 options:

Press button-
are shown on the display for 3 seconds then returns to the measurement screen.
4.01 7.09
4.00 7.06
4.00 7.04
4.00 7.02
4.01 7.00
4.01 6.99
4.02 6.98
4.03 6.97
4.05 6.97
4.06 6.96
.
, "Cal 1" displays on the top right of the screen and is blinking. The
appears on the top of the screen,
to store the 1-point calibration data and exit, the offset and the slope
STARTER 2100 Bench pH Meters
10.25
10.18
10.12
10.06
10.01
9.97
9.93
9.89
9.86
9.83
is blinking during calibration.