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Keep out of reach of children
Attention: Before any use of the vial test or measuring scoop, make sure it is washed with RO water only and dry it up with a soft paper.
Attention: keep NO3-1 and NO3-2 reagents always in dark place (in the box) and minimize its exposure to light.


Results of Royal Nitrate professional test kit are in PPM
Each kit will give you 100 tests.


steps only:

  1. Using the 5 ml syringe, add 5 ml of aquarium water to the test vial.
  2. Add 5 drops of NO3-2 to the test vial and swirl gently for 30 seconds.
  3. Add to the test vial - 1 level scoop of NO3 - 1 reagent and swirl gently for 30 seconds.


Allow it to stand for 5 minutes. If the colors keep changing, let it stand for another 2 minutes for the best result.


Hold the test vial next to the supplied color chart on a part of the chart which is white and compare the colors looking from the side of the test vial. Read the corresponding nitrate content. An intermediate color corresponds to intermediate nitrate content.


  • Keep your fish aquarium healthy and thriving by using Royal Nature advanced test kits. Testing your aquarium water's Nitrate levels regularly with our easy-to-use ROYAL NO3 PROFESSIONAL TEST is recommended. Testing water parameters on regular basis, helps prevent many invisible water problems that can be harmful to fish. When left without treatment, high Nitrate can lead to an unwanted build-up of organic pollutants and poor fish health. Testing with Royal Nature professional test kit is fast, easy, and accurate. The ROYAL NO3 PROFESSIONAL TEST for freshwater aquariums test for harmful Nitrate levels from 0-100 mg/L and easy to read color chart. contains 100 tests.  

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