yes i should believe you can se a ferret funnel for a hamster as a hamster is smaller than a ferret meaning it shouldn't get stuck nor have trouble moving around :)
Funnels are used for filtering - separation of solids from liquids.Funnels are used to aid in the transfer of liquid from a wide to a narrow necked vessel.
It is used to separate 2 liquids that can not be mixed such as water and oil. Water is down and oil is up, we pour both in the separator funnel, and open the tap, when water is over, close it, and...