AquaChek Cyanuric Acid Test Strips Tests for: Stabilizer (Cyanuric Acid) This is a stand-alone specialty test for cyanuric acid (stabilizer). An ideal level of cyanuric acid will make chlorine more stable when exposed to UV rays. FIND AN AquaChek RETAILER Product Demos FAQ Product Information Recommended Products Product Information Stabilizer (Cyanuric Acid): 0-300 ppm Bottle. Cyanuric Acid. Recommended Products HachDPD Pro