Water and Wastewater Terms Beginning F
A B C D E F G H I J K L M N O P Q R S T U V W Y Z
free available chlorine
The amount of chlorine available in water. This chlorine may be in the form of dissolved gas (Cl2), hypochlorous acid (HOCl), or hypochlorite ion (OCl–), but does not include chlorine combined with an amine (ammonia or nitrogen) or other organic compound.
