Which lab glassware will give the most accurate measurements of liquids?

Burettes are specifically designed for delivering precise volumes of liquids. They are typically used in titration applications where accuracy is paramount because they allow for very fine adjustments in the volume dispensed, thanks to their stopcock mechanism. The long, narrow design of a burette also facilitates clear visibility of the liquid level, enabling operators to make accurate readings down to the last drop.

In contrast, flasks are generally used for mixing or storing liquids rather than for measuring. Graduated cylinders, while more accurate than flasks, still have a wider range of error compared to burettes due to the wider opening and less precise dispensing options. Pipettes are designed for transferring specific volumes but do not allow the operator to dispense variable volumes with the level of precision that a burette does. Therefore, in terms of accuracy for measuring liquid volumes, burettes are the most reliable choice.