What are the possible sources of error in using a graduated pipet? in using a buret?

http://chemed.chem.purdue.edu/genchem/lab/equipment/pipet/error.html

http://chemed.chem.purdue.edu/genchem/lab/equipment/buret/error.html

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Did you know?

Did you know that using a graduated pipet or a buret can introduce sources of error in scientific experiments? One possible source of error in using a graduated pipet is parallax error, which occurs when the observer's eye is not directly at the same level as the liquid meniscus, leading to inaccurate volume measurements. Another source of error is temperature variation, as the volume of liquids can change with temperature, affecting the precision of measurements. Similarly, in using a buret, parallax error is a concern, as well as the potential for air bubbles to form, leading to incorrect volume readings. As scientists, it is crucial to be aware of these potential sources of error and take precautions to minimize them for accurate and reliable results.