What is the volume of a drop of water from an eyedropper?

Question

Maybe it depends on the size of the opening.

Answer 1

You will need an eye dropper, a small graduated beaker measuring in ml, pencil, papaer and patience.

Fill the eye dropper to the same level each time, and count the number of drops it take to get, say, 10 ml of water. Record that. Then do it again, and again, and again, say 5 times.

Now average the different counts and that is the average number of drops in 10 ml.

Now divide 10 ml by the average number of drops and you have the number of ml's per drop. I.e., you have the volume of a single drop.

HTH

Charles

Answer 2

If the drop releases from the eyedropper after forming at the opening, and the opening is a pretty standard size, rule of thumb is right about 20 drops to the cc.