Terms

Question 1

CT

Answer 1

Contact Time is the amount of time a disinfectant is in contact with something in order to be effective. Calculate FAC concentration (mg/L) x Time (minutes)
ex- 20ppm x 12.75 hrs =15300

Question 2

Saturation Index

Answer 2

Calculation to determine if pool is balanced. Should equal between -0.3 and 0.3.

Question 3

Alkalinity

Answer 3

The buffer.
The measure of the ability of the water to resist changes in pH. The higher the alkalinity the more difficult it is to adjust the level of pH.

Question 4

Calcium Hardness

Answer 4

Total mineral content of pool water. Too much can cause scaling.

Question 5

Combined Chlorine

Answer 5

Chlorine that has already reacted with organic matter and bacteria. Also called chloramines.

Question 6

Cyanuric Acid

Answer 6

Chemical used to prevent decomposition of chlorine by UV light. Only in outdoor pools

Question 7

ORP

Answer 7

Oxidation reduction potential. The activity or strength of oxidizers and reducers in relation to their concentration.

Question 8

pH

Answer 8

measures acid and base levels of liquids. 7.0 is considered neutral.
Range is 7.2-7.8

Question 9

Potassium monopersulfate

Answer 9

chemical compound that oxidizes organic contaminants in a pool. Used to reduce CC

Question 10

Superchlorination

Answer 10

Adding high amounts of chlorine to pool increase FAC

Question 11

Turnover

Answer 11

the rate at which the full volume of the pool takes to pass through the circulation system

Question 12

Flow rate

Answer 12

the amount of water to pass by a given point during a certain amount of time