5 in 1 Test Strips will allow you to easily track critical water quality parameters with one test. - 50 Strips pH Total Hardness Total Alkalinity Nitrate Nitrite Test Procedure: Dip one test strip into water for 2 seconds without motion. Remove the strip and shake once, briskly, to remove excess water. Wait 25 seconds. Match pH, Total Alkalinity, & Total Hardness (in this order). Match Nitrite & Nitrate colors at 1 minute.
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