BioGuard 4-Way Test Strips for Pool and Spa are a fast, easy way to check the chemistry of your water. These tell you the total bromine, free chlorine, pH, and total alkalinity. Experts recommend testing weekly to keep those important levels in line and keep your pool running at optimum performance. With BioGuard's test strips you can check them accurately with just one dip.
Directions For Use:
- Dip entire strip into water and remove immediately.
- Hold strip level for 15 seconds (Do NOT shake off excess water)
- Compare total bromine, free chlorine, pH, and total alkalinity to color chart on bottle