Rinse the burette two to three times with distilled water. Be sure that all inner sides make contact with the water. Run some of the water through the tip into a beaker to rinse the tip and stopcock. Discard the rinse water.
Rinse the burette twice with about 5-10 ml of the solution to be titrated. Be sure that all inner sides make contact with this solution. Run some of the water through the tip into a beaker to rinse the tip and stopcock. Discard the rinse solution.
Use a clean and dry funnel to fill a rinsed burette to about the 0.00 ml mark with the solution to be titrated.
To expel air from the tip and stopcock, run some of the solution out into a small beaker. Tap the tip to dislodge air while letting the solution out..
Fill solution into the burette until the volume about we need. Record this volume.
Do not leave the funnel in the burette since liquid can drip down to give an inaccurate volume.
Now the buret is ready for use.