In a coffee machine, the ground coffee is separated from the coffee solution by using ___ .
A filter
Sand paper
Evaporator
Condenser
A filter is used to separate the coffee beans that are in the solid state from the coffee solution which is in the liquid state.
In a coffee machine, the ground coffee beans are separated from the coffee solution by using a/an ______.
Which is the best technique to separate coffee grains from coffee solution?