General description You can test your pool and spa for pH, free chlorine/bromine, total chlorine, total alkalinity, cyanuric acid, and total hardness with these 6 in 1 pool test strips. Keep your water healthy and clean all year round. Technical specifications Type: 6 in 1 Pool Test Strips Number of strips: 50 strips per pack Packaging: Each pack is sealed with 5 individual moisture-proof packets Storage life: Up to 2 years Usage Soak a strip in water for 2 seconds Remove the strip and wait 15 seconds Compare any color changes on the color chart on the side of the bottle for accurate water quality results Other information Made of high-quality imported filter paper Each test strip features 6 color indicators for high accuracy and reliable instant reading Packaged in an easy-to-store container