What is the primary function of an eyedropper in laboratory work?

The primary function of an eyedropper in laboratory work is to dispense small amounts of liquid accurately and precisely. Eyedroppers are particularly useful for transferring liquids in small volumes, allowing for controlled dosage, which is crucial in experiments where the concentration of a solution can affect the outcome. This functionality supports various scientific applications, including titrations, preparing dilutions, and adding reagents to reactions.

While other tools in a laboratory serve different purposes, such as measuring mass or holding specimens, the eyedropper is specifically designed for liquid transfer, making it essential for tasks that require careful addition of liquids without spillage or excess. This is why the correct choice highlights the importance of the eyedropper's role in handling liquids effectively in laboratory settings.