and Answers 100% Pass
Acid - ✔✔A solution that contains more H+ ions than OH- ions and has a PH of less
than 7
Algae - ✔✔Chlorophyll-containing plants ranging from one-celled to multi-celled
Algaecide - ✔✔an agent used to kill algae
Backwash - ✔✔The process of cleaning a filter where the water flow is reversed and
sent to waste
Bacteria - ✔✔Microscopic one-celled living organisms
bactericide - ✔✔substance that kills bacteria
Base - ✔✔A solution that contains more OH- ions than H+ ions and has a PH greater
than 7
Calcification - ✔✔To become hardened by calcium carbonate
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, Chloramines - ✔✔Chlorine combined with ammonia-containing contaminants (also
known as combined chlorine)
Coliforms - ✔✔Bacteria found in the intestinal tract of humans and animals
Corrode - ✔✔To eat away gradually by chemical action
Cyanuric acid - ✔✔chemical that stabilizes chlorine against ultraviolet light of the sun
Diatomaceous Earth - ✔✔Fossil remains of tiny aquatic plants called diatoms that are
used as a type of filter media
Disinfection - ✔✔Destruction of pathogenic microorganisms and reduction of non-
pathogenic micro-organisms by thermal or chemical procedures
Effluent - ✔✔The water that flows out of a filter
Flocculent - ✔✔Alum or similar substances added to water that combine with
contaminants making them easier to filter out
FAC - ✔✔(or Free Available Chlorine) Chlorine disinfectant in pool water that is
available to react with new contaminants introducing to the water
Hardness - ✔✔Calcium, magnesium, and other dissolved minerals which may cause
scale build-up
HPC - ✔✔Heterotrophic Plate Count. A general bacteria count in a water sample
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