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How does a dropper work?

Updated: 9/11/2023
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Wiki User

8y ago

Best Answer

If you squeeze the bulb to expel most of the air, then release it with the tip under water, the pressure in the bulb drops and external air pressure on the surface of the liquid in its container forces the liquid into the dropper. When you squeeze the bulb again, you increase the pressure and force the liquid out.

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Wiki User

8y ago
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Q: How does a dropper work?
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