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4.4.2 Setting a customized buffer group
- In the pH menu enter "4. Set Cal", enter "1. Buffer" and select "7. Customized".
- Edit the temperature of the pH buffers.
- Press Enter to save the value.
- Enter the pH value of your first buffer. Press Enter to save the value.
- Press Next to enter the next buffer, press Back to re-enter the current buffer value or press End to finish
setting.
- After you have made the settings, the temperature and buffers entered are shown on the display. Quit
the menu and start the calibration.
4.4.3 Setting ion concentration standards
SevenGo pro™ SG8 pH/ORP/ION Meter allows you to calibrate using one of the following concentration
units:
1. mmol/L
2. mol/L
3. ppm
4. mg/L
5. %
- In the ion menu enter "4. Set Cal", enter "1. Standard" and press Edit to start setting.
- Select the concentration unit in which you have prepared the standards.
- Enter the temperature of the standards.
- Press Enter to save the value.
- Enter the concentration of the standards.
- Press Enter to save the value
- Press Next to enter the next standard, press Back to re-enter the current standard or press End to finish
setting.
- After you have made the settings, the temperature and buffers entered are shown on the display. Quit
the menu and start the calibration.
4.4.4 Performing a calibration
- Place the electrode in a calibration buffer and press Cal.
- The meter endpoints according to the preselected endpoint format or after pressing Read.
- Rinse the electrode with deionized water.
- Place the electrode in the second calibration buffer and press Cal.
- Repeat the procedure for all of your calibration buffers.
- End the calibration by pressing the End softkey. The calibration data is shown on the display.
- To use the calibration data for later measurements, press Save. To discard the calibration data, press
Cancel.
METTLER TOLEDO SevenGo pro™ pH
Calibration
11
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