Is there anything I can add to the ferrofluid that WILL NOT mix with it?
ferrofluid in a clear container along with water and the two won’t mix. No, water will not mix with the ferrofluid. The ferrofluid is heavier than water so will be the bottom layer. If you need the ferrofluid to be the top layer you will need to thin it a little with kerosene or something similar to it. What size are the particles in the ferrofluid The particles within the ferrofluid are approximately ten nanometres. A nanometre is approximately one billionth (10-9) of a meter, so is pretty small. Whenever the ferrofluid touches the sides of a container it leaves a fine film behind.
