2nd October 2019

sciencing
14

Which piece of glassware is the most correct?

Volumetric pipets, flasks and burets are the most accurate; the glassware makers calibrate these to a high level of accuracy. The accuracy is usually measured in terms of the tolerance, which is the uncertainty in a measurement made with the glassware.

Also to know is, how many decimal places does a Buret have?

Since your buret is graduated to 0.1 mL, you will read your buret to 0.01 ml. The second decimal place is an estimate, but should be recorded. You fill the buret to the 0.00 mark with your solution, making sure there are no air bubbles in the buret itself, the stopcock or in the buret tip.

How many decimal places are used for a graduated cylinder?

The 10-mL graduated cylinders are always read to 2 decimal places (e.g. 5.50 mL) and the 100-mL graduated cylinders are always read to 1 decimal place (e.g. 50.5 mL). so that the line at the bottom of the meniscus gives the most accurate reading.

Which is more precise a graduated cylinder or a volumetric pipette?

Graduated cylinders are generally more accurate and precise than laboratory flasks and beakers, but they should not be used to perform volumetric analysis; volumetric glassware, such as a volumetric flask or volumetric pipette, should be used, as it is even more accurate and precise.
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