5-in-1 Test Strips for the measurement of pH, free Chlorine, Bromine Alkalinity, Total Hardness and Cyanic Acid values.

Each 10 of the 50 Strips per can are vacuum packed in foil.
Number of Test Strips: 50
Shelf-Life in Years: 3

Packaging: 2 pots of 50 test strips

Difference between Free chlorine & Total chlorine

Chlorine in water may be present in two forms, free and combined. Free chlorine does the hard work of killing bacteria and oxidizing contaminants. When you add chlorine to water, you are actually adding free chlorine. When the free chlorine combines with contaminants, it becomes combined chlorine, or chloramines. In water, this form of chlorine has very little sanitizing ability, and no oxidizing ability. Total chlorine is just the sum of both combined chlorine and free chlorine.

Which measurement you use, free or total, depends on your testing needs.

5-in-1 Test Strips for the measurement of pH, free Chlorine, Bromine Alkalinity, Total Hardness and Cyanic Acid values.
Each 10 of the 50 Strips per can are vacuum

Number of Test Strips: 50
Shelf-Life in Years: 3

Measurement Ranges:
pH-value (pH) : 6.8 - 8.2
Chlorine (free) (Cl₂ mg/l) : 0.0 - 5.0
Bromine (Br mg/l) : 0 - 11
Alkalinity (total) (CaCO₃ mg/l) : 0 - 240
Total Hardness (CaCO₃ mg/l) : 5 - 500
Cynuric Acid (C₃H₃N₃O₃) : 0 - 150