Elos Aqua Test PO4 Test Kit gives you 162 tests for your freshwater or marine tank. A precisely calibrated dropper is included for accuracy. Kits are also lab tested so you know your results are correct. Reagents are not toxic, unlike other kits.
Instructions 1. Shake each reagent bottle before use. 2. Rinse the test vial in tap water; then several times with the aquarium water. Fill it with the aquarium water sample up to the 10 mL mark using the measuring syringe. 3. Add 2 drops of reagent PO4 A. (Close the reagent flask immediately.) 4. Add 2 drops of reagent PO4 B. (Close the reagent flask immediately.) 5. Close the test vial with the plastic stopper and shake the solution for 2 minutes. 6. Put the vial on white field on the color chart and, by looking from above into the open vial, compare the color of the solution with the color field. The PO4 value is indicated in the corresponding color field. 7. Rinse the vial and the measuring syringe with tap water.