Basic operating steps of an automatic potentiometric titrator

Release Time

2021-09-15 00:00

1. Take the pH electrode out of the saturated kcl aqueous solution, wash it with distilled water and wipe it clean.
2. Insert the pipette into distilled water, and insert the burette into the waste bottle.
3. Turn on the power of the host and the mixer; and start the working program.
4. Click "Parameter" on the working program interface to set the parameters, and arrange the settings by yourself for the titration situation.

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5. Click the "Send" button on the operation page, enter the volume (20-50ml) and press "Send" to fill the pipe with liquid.
6. Check to see if there are bubbles, if so, insert the bubble needle into the quantitative tube to suck out the gas.
7. Insert the pipette into the standard solution; insert the burette into the solution to be tested, and at the same time place the magnetic stirrer in the solution to be tested and put down the stirrer. Repeat step 5 above.
8. Insert the washed pH electrode into the liquid to be tested, and the electrode head is immersed in the liquid.
9. When the electrode potential is basically stable, start the measurement program on the operation interface.
10. At this time, the instrument draws a curve on the screen while titrating. After the titration is completed, the instrument automatically calculates the end point volume, end point potential and the concentration of the liquid to be measured.
11. After the measurement, take out the electrode for cleaning and put it back into the saturated Kcl liquid for use. Turn off the titrator and the computer and turn off the power to end the operation.