What do pool test strips test for? （2）

MPS

mg/L

0.5-20

3-5

MPS is short for Potassium Peroxymonosulfate. It can be used as an oxidizer for brominated pools and spas. To keep your spa water clean and healthy

QAC

ppm

0-40

5-10

Algae inhibitor, algaecide

Salt（NACL）

ppm

0-8000

0-1500

2000-4000 AUS

2700-3400 US

2000-6000 EU

Salt serves as a natural antiseptic, preventing the growth of bacteria and algae while causing no damage to swimmers' skin.

H2O2

ppm

0-100

0-50

3-10

Disinfectant

Chlorine Dioxide

ppm

0-10

0-500

pool：

≤1

＜2

drink：10-100

Disinfectant

Copper

ppm

0-1

0.2-0.4

Disinfectant

Phosphate

ppb

0-2500

＜150

Phosphate concentrations in pool water are generally maintained below 150 ppb, and once it exceeds 500 ppb, steps should be taken to reduce levels.

When chlorine levels are low and phosphate levels high, algae grow rapidly in the pool, causing the water to turn green.