Check the listing for details. AquaChek 551236 Silver 7-in-1 Test Strips - 100 Strips. Condition: New. Listed at 24.30 USD. AquaChek Silver 7-Way offers seven important tests on a single strip. It is faster and easier to use than liquid test kits. These test strips also allow you to test Cyanuric Acid up to 300 ppm (mg/L), a higher level than any available liquid kits! This Cyanuric Acid test works in pH between 7.0 and 8.4, and in Total Alkalinity at or below 240 ppm. It offers enhanced colors for greater color distinction and easier readability. The AquaChek Silver 7-Way Test Strip comes with 100 strips per bottle.Tests For:Total HardnessTotal ChlorineTotal BromineFree ChlorinepHTotal AlkalinityCyanuric Acid (Stabilizer)AquaChek Silver 7-Way offers seven important tests on a single strip. It is faster and easier to use than liquid test kits. These test strips also allow you to test Cyanuric Acid up to 300 ppm (mg/L), a higher level than any available liquid kits! This Cyanuric Acid test works in pH between 7.0 and 8.4, and in Total Alkalinity at or below 240 ppm. It offers enhanced colors for greater color distinction and easier readability. The AquaChek Silver 7-Way Test Strip comes with 100 strips per bottle.Tests For:Total HardnessTotal ChlorineTotal BromineFree ChlorinepHTotal AlkalinityCyanuric Acid (Stabilizer)