100pcs Swimming Pool Spa Test Strips

Features:
7 chemical indicators including Hardness, Residual Chlorine, Bromine, Total Chlorine, Cyanuric Acid, Total Alkalinity and pH levels, can be tested simultaneously on one test paper.
Widely used for swimming pool, spa, bath, hot tub and other water chemical testing.
It is important to test your swimming pool, spa or hot hub frequently to keep the water clean. Researches show that you should test your pool and spa weekly.
Easy to use, soak in water for 2 seconds, then take it out, lay the test strip horizontally for 30 seconds, compare with the color chart on the bottle to obtain clear and accurate water quality results.
The box contains 100 pieces of test strips, high quality fiber paper provides instant and reliable result.
Instructions:
1. Take water sample
2. Take out a strip of test paper from the bottle and then cover he bottle.
3. Immerse the test paper into the water sample to ensure that all test paper strips have been immersed in the water sample.
4. Take out the test paper, lay it flat on the table and wait for 30 seconds.
5. Compare with the color chart on the bottle, and remember to compare the color blocks one by one to obtain the test results.