Glossary of Terms
Abbreviation for parts per million.
A chemical which disinfects (kills bacteria), kills algae and oxidizes organic matter.
See Langelier's Index
Crust of calcium carbonate, the result of unbalanced pool water. Hard insoluble minerals deposited (usually calcium bicarbonate) which forms on pool and spa surfaces and clog filters, heaters and pumps. Scale is caused by high calcium hardness and/or high pH. The regular use of stain prevention chemicals can prevent scale.
Also known as superchlorination or break point chlorination. Ridding a pool of organic waste through oxidization by the addition of significant quantities of a sanitizer.
Chemical used to raise pH and total alkalinity (sodium carbonate)
Commonly used to increase alkalinity of water and stabilize pH.
Chemical used to lower pH and total alkalinity (dry acid).
Also known as caustic soda, A by-product chlorine generation and often used to raise pH.
See Cyanuric Acid
Application of large dosages of chlorine to destroy build up of undesirable compounds in water.
A method of testing by adding a reagent of known strength to a water sample until a specific color change indicates the completion of the reaction.