LABEC M-TIT-5 - Manual (Page 46)

Diag.62 Two-point Calibration in starting status
View Titrate Mode Set Calibrate
Calibration/Two-point calibration
9.18
pH
Titrate
25.0
℃
Clean
Enter Exit
Feed
Titration Panel READY + K 10/21
b. When displayed pH value stable, press ‘Enter’ button, meter displays ‘Calibration finished!’ and
calibrated electrode slope value, this means two-point calibration finished. Now calibration also
finished. Press ‘Enter’ button to quit from calibration panel. In the process of calibration, user
could stop calibration at any time by pressing ‘Exit’ button
12. pH Measurement
In the starting state, if the meter displays the potential value and temperature value, user can
press potential and temperature displaying area, the meter will turn to pH measuring status.
Press again, meter will return to potential displaying status. Displayed as diag.63
Diag. 63 PH displaying in starting status
View Titrate Mode Set Calibrate
1.00
pH
Titrate
25.0
℃
Clean
13. Calibration of Burette Coefficient
In the starting state, clean burette for several times, fill the burette with distilled water (there
can't be bubbles in the burette). Set the burette and set the burette coefficient as 100%. Take a
clean weighing bottle, first weigh the empty bottle with the balance of 1/10000, put dripping
tube into the weighing bottle, press "Titration" button to enter into titration mode, move cursor
onto "Manual Titration", then press "Enter" to enter into manual titration mode. Please select
Titration Panel READY + K 10/21
Feed
45