Which piece of equipment would give the most accurate measurement of 45 ml of a liquid?

The answer is a 50 mL graduated cylinder.

Graduated cylinders are used for volume measurement. They have graduations each 10 mL and further graduations every 1 mL or more, depending on the total volume that can be measured in the cylinder. The smaller its diameter is, the more precisely it is. It is more accurate than graduated beakers or flasks, which are usually used for gross estimates.

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