- 50 hot tub and spa test strips
- protect your equipment from corrosion and your guests from bacteria by testing your hot tub water twice per week
- easy color-coded results in seconds permit you to make quick and clear adjustments to hot tub sanitizers
- works with both bromine sanitizers & Chlorine!
- tests for bromine, chlorine, alkalinity, calcium water hardness, and pH levels
- Made in USA