Mardel Laboratories 5 in 1 Test Strips monitor pH, hardness, alkalinity, nitrite, and nitrate. Perfect for freshwater or saltwater use, let Mardel 5 in 1 test strips cut your water testing time in half! Kit includes 25 test strips and a Water Quality Guide. Test strips contain absorbent pads saturated with a specially blended set of nontoxic chemicals that turn different colors when exposed to certain substances in water.
Active Ingredients:
Each tablet contains 250mg tetracycline hydrochloride.
Instructions:
Simply dip the test strip in tank water and remove, wait 60 seconds then compare pad color to the color chart provided.
Size: 25 Strips