Bottle Feeding: Bottles are fed into the machine, often through an unscrambler or conveyor system.

Filling: The machine accurately dispenses the liquid into the bottles, using mechanisms like peristaltic pumps or piston pumps.

Dropper Insertion: A dropper cap, often including a separate dropper component, is automatically inserted into the bottle. 

Capping: A screw cap is then applied and tightened securely, often using a mechanical arm or other specialized capping mechanism. 

Labeling and Printing (Optional): The filled and capped bottles can then be labeled, printed with information (like batch numbers), or shrink-sleeved.

Collection: Finally, the finished bottles are collected, ready for packaging. 

This video demonstrates how to use a ceramic pump-based dropper bottle filling machine: