The basic way to measure density is to weigh a known volume. For example weigh a 1 liter container, fill it with liquid, weigh it again then subtract the weight of the container to find the weight of 1 liter of liquid.

Another option is to find the weight relative to pure water.

Your commenter: Monika :)

Another option is to find the weight relative to pure water.

Your commenter: Monika :)