LYZ 14 parameters water test strips 9 in 1 Drinking Water 6 in 1 aquarium 4 in 1 Pool & Spa Strips water test kits Visual Reading StepsStep 1 Remove a test strip, taking care not to touch the reaction fields.Step 2 Immediately close the container again.Step 3 Dip the test strip for about 1-2 second into the fresh water specimen.Step 4 Read the result by comparing the color scale after 40 seconds. Testing for 1total alkalinity2PH3total hardness4iron5copper6bromine7lead8nitrate9nitrite10free chlorine11total chlorine12 cyanuric Acid13 carbonate14fluorideClick here for more information