<P> A volumetric flask ( measuring flask or graduated flask ) is a piece of laboratory glassware , a type of laboratory flask , calibrated to contain a precise volume at a particular temperature . Volumetric flasks are used for precise dilutions and preparation of standard solutions . These flasks are usually pear - shaped , with a flat bottom , and made of glass or plastic . The flask 's mouth is either furnished with a plastic snap / screw cap or fitted with a joint to accommodate a PTFE or glass stopper . The neck of the volumetric flasks is elongated and narrow with an etched ring graduation marking . The marking indicates the volume of liquid contained when filled up to that point . The marking is typically calibrated `` to contain '' ( marked `` TC '' or `` IN '' ) at 20 ° C and indicated correspondingly on a label . The flask 's label also indicates the nominal volume , tolerance , precision class , relevant manufacturing standard and the manufacturer 's logo . The volumetric flasks are of various sizes , containing from 1 to 20 000 mL of liquid . </P>
<P> A volumetric flask ( measuring flask or graduated flask ) is a piece of laboratory glassware , a type of laboratory flask , calibrated to contain a precise volume at a particular temperature . Volumetric flasks are used for precise dilutions and preparation of standard solutions . These flasks are usually pear - shaped , with a flat bottom , and made of glass or plastic . The flask 's mouth is either furnished with a plastic snap / screw cap or fitted with a joint to accommodate a PTFE or glass stopper . The neck of the volumetric flasks is elongated and narrow with an etched ring graduation marking . The marking indicates the volume of liquid contained when filled up to that point . The marking is typically calibrated `` to contain '' ( marked `` TC '' or `` IN '' ) at 20 ° C and indicated correspondingly on a label . The flask 's label also indicates the nominal volume , tolerance , precision class , relevant manufacturing standard and the manufacturer 's logo . The volumetric flasks are of various sizes , containing from 1 to 20 000 mL of liquid . </P>
what is the function of a volumetric flask
what is the function of a volumetric flask
for precise dilutions and preparation of standard solutions
for precise dilutions and preparation of standard solutions