- Includes OTO, which tests chlorine or bromine levels
- Includes phenol red, which tests pH
- Includes the "kit" with centred colour references
- Includes one unbreakable, hinged container
- These test drops should only be used in an already purchased test kit (not on their own)
- Works for many different pool and spas (both chlorine and bromine)
Follow instructions to properly test the levels of your pool! Images are not exact.