bores that permit fine stream control . The spring component that holds the fitting to a firm seal is inside the handle . It shields from any outside reagents . It gives a fabulous against stick contact surface .
A will be a uniform-bore glass tube with fine graduations and a stopcock at the base . It is utilized as a part of volumetric investigation to gauge the volume of a fluid , particularly of one of the reagents in a titration . Burettes are utilized when it is important to apportion a little measured volume of a fluid , with respect to titration . BURETTES might be utilized to adjust the volumes of different bits of china , for example , graduated barrels . Most BURETTES are made of borosilicate glass with PTFE ( Teflon belt ) stopcocks .