Key Features

• Fresh, Accurate Testing for the Pool Season Ahead - AquaChek Yellow Chlorine 4-in-1 includes 50 precision test strips—perfect for a full season of reliable water testing for pools and spas that use chlorine. No expired extras, no bulky packs—just fresh, accurate results from AquaChek, the most trusted brand in pool and spa water testing.
• Trusted 4-Way Testing for Cleaner, Safer Water - AquaChek Chlorine 4-in-1 strips test the four key parameters: Free Chlorine, pH, Total Alkalinity, and Stabilizer (Cyanuric Acid). Together, they help you keep your water safe, balanced, and crystal clear—while ensuring your chlorine works effectively. No guesswork, just confident pool care.
• Designed for Clean, Simple, No-Waste Use - No more fumbling or wasted test strips. AquaChek’s flip-top bottle dispenses one strip at a time, helping you keep the rest dry and protected. Designed for quick, clean, and convenient pool and spa water testing whenever you need it.
• Pro-Grade Accuracy Trusted by Pool Professionals - AquaChek delivers reliable, lab-validated results with every strip. Trusted by pool service pros, commercial facilities, and health departments, it helps you test with confidence—so you can treat your water precisely and avoid costly mistakes.

Specifications