Glass 1989 SPA Manual De Uso página 86

Chloramines: Compounds formed when chlorine combines with nitrogen from body
oils, urine, perspiration, etc. Chloramines can cause eye irritation as well as having a
Chlorine:
of sodium dichlor-type granulated chlorine. This type is preferred because it is totally
EN
soluble and nearly pH neutral.
of sanitizer which is chemically available to kill bacteria, viruses and algae.
Corrosion: The gradual wearing away of metal spa parts, usually caused by chemical
action. Generally, corrosion is caused by low pH or by water with levels of TA, CH, pH
or sanitizer which are outside the recommended ranges. DPD: The preferred reagent
Halogen:
astatine.
MPS: Monopersulfate is a non-chlorine oxidizer.
The use of an oxidizing chemical is to prevent the buildup of contaminants,
Pathogen: A microorganism such as bacterium that cause disease.
pH: The measure of the spa water's acidity and alkalinity. The recommended pH for the
spa water is 7.4 to 7.6. Below 7.0 (considered neutral), the spa water is too acidic and
can damage the heating system. Above 7.8, the water is too alkaline and can result in
cloudy water, and scale formation on the shell and heater.
ppm: The abbreviation of "parts per million", the standard measurement of chemical
concentration in water. Identical to mg/l (milligrams per liter).
Reagent: A chemical material in liquid, powder, or tablet form for use in chemical testing.
Sanitizer: Sanitizers are added and maintained at recommended residuals to protect
bathers against pathogenic organisms which can cause disease and infection in spa
water.
Scale:
high pH. Additionally, scale forms more readily at higher water temperatures.
Also known as "super-chlorination" when chlorine is used. Shock
chloramines and bromamines.
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