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Insta-Test 6 (Code# 3028-BC-12) measures Cyanuric Acid (0, 40, 100, 150, 250 ppm), Free Chlorine (0, 0.25, 0.50, 1.0, 3.0, 10 ppm), Total Chlorine (0, 0.25, 0.50, 1.0, 3.0, 10 ppm), Alkalinity (0, 40, 80, 120, 180, 240 ppm), pH (6.2, 6.8, 7.2, 7.8, 8.4) and Total Hardness (50, 100, 250, 450, 800 ppm) in just 2 seconds.
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