9 parameters drinking water test strip test strips for liquid
drinking water test strip test kit for liquid 9 parameters (CE ISO FDA ) 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 alkalinity2free chlorine3PH4iron5total hardness6nitrate7nitrite8copper9leadClick here for more information