12 x Check₂O 3-in-1 test strips (free chlorine, pH, alkalinity)

Box of 12!
We also sell single Check₂O 3-in-1 test strips.

Check₂O 3-in-1 test strips are designed to easily measure the three essential parameters for spa and pool maintenance: alkalinity (0-240 ppm), pH (6.4-8.4), and free chlorine (0-10 ppm). With a simple dip in the water, they provide instant results, allowing you to quickly adjust treatment if needed.

For consistently balanced and healthy water, it is recommended to test your spa after each use or at least twice a week.

Contents
12 x 50 test strips

Part numbers
Johnson Analytica: 303.001