ring stand1. Rinse a buret thoroughly, first with tap water, then with distilled water.
2. Obtain about 50 mL of one unknown NaOH solution in a clean beaker. Be sure to
record which unknown you are using. Caution: Handle this solution with care. It can
cause burns! Pour about 5.0 mL of the base solution into your buret and rinse the
inside surface of the buret thoroughly. Allow the base to run out of the buret tip.
Pour the remainder of the base solution into your buret. Purge any bubbles from the
buret tip by allowing some of the base to run out of the tip.