Section 7 Standard operations
C A U T I O N
Multiple hazards. Only qualified personnel must conduct the tasks described in this
section of the document.
C A U T I O N
Chemical exposure hazard. Obey laboratory safety procedures and wear all of the
personal protective equipment appropriate to the chemicals that are handled. Refer to the
current safety data sheets (MSDS/SDS) for safety protocols.
C A U T I O N
Personal injury hazard. Never use the instrument without the syringe protection cover in place.
C A U T I O N
Chemical exposure hazard. Never remove the stir bar from the beaker before the end of a titration.
7.1 Calibration
7.1.1 Calibrate the sensor
1. From the home screen, select Calibration, then push Electrode calibration.
2. If more than one sensor is installed, push the up and down arrow keys to highlight the
sensor to use, then push Select.
3. If more than one application includes calibration parameters for the sensor, push the
up and down arrow keys to highlight the application to use, then push Select.
Calibration information shows on the display.
4. If necessary, select an icon for more information or to change some data.
Option Description
Electrode Shows more information about the sensor.
Operator Changes the operator ID. Select from a list of applicable operators.
Buffer or Standard Shows more information about the buffer set or standard.
5. Do the instructions that show on the display, then push Start to start the calibration.
Calibration data shows on the display.
6. If the default stirring speed needs to be adjusted, push the up and down arrow keys
to increase or decrease the speed.
Note: This adjustment only applies to the current operation. The standard default stirring speed
for the calibration is not changed.
7. Select Stop at any time to stop the calibration. Results are then calculated from the
calibration data available before Stop is selected.
8. For pH sensors only:
Option Description
Yes Continue with the next calibration buffer solution in the sequence.
No Stop the calibration. The calibration can still be validated if at least one buffer
calibration was successful.
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