Burettes

These are calibrated to deliver’. Fill a burette a bit higher than zero mark at the top. Check for trapped air bubbles, tap the burette lightly to remove these drain the solution once clearly to level of zero mark. Wipe off the drop at the tip of the burette, Open the stopcock slowly to start titration. Do not touch tip to the container wall you use When the color begins to change. stop the titration and want for 30 seconds as the waiting time of class A.’ burette Specifies Check the meniscus for changes and add little volume to get complete titration,