| Need to test the pH and chlorine level of your pool, spa water, or drinking water? Let our pH and chlorine test strips do the job for you. Chlorine test strips varies between low range and high range. Low Range covers 0 to 20 ppm, while High Range covers 50 to 2000ppm. Each pack contains 50 strips per bottle. Merck pH test strips covers pH levels 0 to 14. Each pack contains 100 strips. |  |  |
