AquaChek Yellow (50) for Free Chlorine, Total Alkalinity, Cyanuric Acid (Stabilizer) & pH, 1 Pack

• AquaChek Yellow tests your pool water for Free Chlorine, Total Alkalinity, Cyanuric Acid (Stabilizer) & pH levels.
• AquaChek Test Strips are manufactured by the industry leader: Environmental Test Systems (ETS).
• Simple, fast, and accurate! Get your result in only 15 seconds.
• Easy to use! Simply dip the test strip into the water.
• 50 Test Strips per bottle.

Fast, accurate and easy! Simply dip into water and watch the pads on the test strip change color to indicate chemical levels so you can treat your pool or spa accordingly.