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- 3-in-1 chemical test strips are ideal for pool or hot tub water testing
- Measures free chlorine (0-10 ppm), pH (6.2-8.4) & total alkalinity (0-240 ppm)
- Instant results with easy-to-read color-match system
- 18-month shelf life
- Contents: 50 test strips
- Choosing a selection results in a full page refresh.
- Press the space key then arrow keys to make a selection.
- Use left/right arrows to navigate the slideshow or swipe left/right if using a mobile device