Why use a volumetric pipette instead of a graduated cylinder

Asked by admin @ in Chemistry viewed by 360 People

What effect will there be on the accuracy of a measurement if you use a volumetric pipet that is not completely dry but instead contains a few drops of the same liquid that you will be drawing into the pipet?

Answered by admin @


This act can lower accuracy as it the "few drops of the same liquid" will increase the total volume of the liquid.
This case will be different if the volume of the liquid is counted by drops, not the total liquid that sucked up by the pipet. It is best to keep an effort to makes the measurement accurate by using a standardized procedure. Even a few drops can cause significant increase if the number of liquid used is small


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