Floating on a surface, as oil on water.
The growth base for bacteria that contains beneficial metabolic byproducts, including antimicrobial compounds (such as hydrogen peroxide and acidophilin), vitamins, enzymes, cellular building blocks, antioxidants, and immunostimulants.
The liquid that remains after removing suspended particles.
Positioned either above or atop another object. Refers to the liquid that covers a solid component after precipitation.