Before titrating condition the burette with titrant solution and check that the burette is flowing freely To condition a piece of glassware rinse it so that all surfaces are coated with solution then drain Conditioning two or three times will insure that a stray drop of water does not change the concentration of titrant Rinse the tip of the burette with water from a wash bottle and dry it carefully After a minute check for solution on the tip to see if your burette is leaking The tip should be clean and dry before you take an initial volume reading When your burette is conditioned and filled with no air bubbles or leaks take an initial volume reading A burettereading card with a black rectangle can help you to take a more accurate reading Read the bottom of the meniscus Be sure your eye is at the level of meniscus not above or below Reading from an angle rather than straight on results in a parallax error