7-in-1 Water Test Strips — test total chlorine, free chlorine, bromine, pH, total alkalinity, cyanuric acid, and total hardness Why customers need this Get a complete water quality check with a single strip: measure seven critical parameters at once to identify chemical imbalances before they cause problems. Protect health, equipment, and aquatic life by detecting unsafe chlorine/bromine levels, incorrect pH, or high hardness and alkalinity early. Save time and money by avoiding trial-and-error dosing or unnecessary chemical purchases. Key benefits and features Broad function: simultaneous measurement of total chlorine, free chlorine, bromine, pH, total alkalinity, cyanuric acid, and total hardness. High precision: accurate, repeatable results make balancing water straightforward and reliable. Easy to read: clear color changes for quick visual comparison and decision-making. Durable packaging: high-quality plastic bottle that is waterproof and moisture-proof to protect strips and extend shelf life. Versatile compatibility: suitable for household water testing, aquariums, pools and spas, reclaimed water and ponds, thermal water, and similar applications. Practical applications (specific scenarios) Pool maintenance before a weekend gathering: test free and total chlorine plus pH to ensure safe, comfortable water for guests. Aquarium care: check pH, hardness, and chlorine levels during weekly maintenance to protect fish and invertebrates. Pond or spa checks after heavy rain: confirm cyanuric acid and alkalinity remain within safe ranges to prevent algae blooms and equipment strain. Simple, reliable testing in a waterproof bottle — a practical tool to keep water safe and balanced across common home and small-scale aquatic environments.