DPD Reagent for Residual Chlorine Measurement, Chlorine Checker, 10 Sachets, Water Purifier, Chlorine Concentration

This reagent changes color to red when it reacts with chlorine.
This reagent indicates when to replace your water purifier cartridge.
It serves as a guideline for cartridge replacement timing.

This reagent can be used to test for chlorine (free residual chlorine) in tap water and purified water.

Add the entire contents of one packet to 10cc of water for testing.
Purified water:
After adding the reagent and stirring, if the water turns pink to reddish-pink, it indicates the presence of residual chlorine, meaning it's time to replace the cartridge.

This reagent can be used to test for chlorine (free residual chlorine) in tap water and purified water.

Tap water: After running the water for about 30 seconds, add the reagent to the water and stir. If it turns pink to reddish-pink, it is safe.
You can check the chlorine concentration in your tap water and bath water at home.