Either technique would work if you have the right equipment, and of course, the type of soil also makes a big difference. For example, evaporation sounds better for soil w/ finer molecules. If you choose to strain the water, then you should be careful about not letting the soil get lost with the water. On the other hand, if you choose to evaporate the water, you need to be careful about completely getting rid of all the water. Think about the type of equipment that you have and then make a decision. You are on the right track!
Science Buddies Staff