Microorganisms that can cause disease in other organisms or in humans, animals, and plants. They may be bacteria, viruses, or parasites and are found in sewage, […]
A measure of proportion by weight which is equivalent to one unit of weight of solute (dissolved substance) per million weights of solution. Since one liter […]
A measure of proportion by weight which is equivalent to one unit weight of solute (dissolved substance) per billion unit weights of the solution. This measurement […]
As used in water industry standards, this term refers to the size, expressed in microns, of a particle suspended in water as determined by the smallest […]
Phenolphthalein alkalinity of water as determined by titration with standard acid solution to the phenolphthalein endpoint (pH approx. 8.3). Includes carbonate and hydroxide alkalinity. (See total […]
An unstable form of oxygen (O3), which can be generated by an electrical discharge through air or regular oxygen. It is a strong oxidizing agent and […]
A chemical substance that gains electrons (i.e. – is reduced) and brings about the oxidation of other substances in chemical oxidation and reduction (redox) reactions.