SeachemSKU: 0970



MultiTest™ Phosphate

  • Measures inorganic phosphate to less than 0.05 mg/L
  • Multi-cavity plate for simultaneous testing of up to 6 tests at the same time
  • Includes reference for test validation
  • Marine or freshwater

    Phosphate in natural sea water ranges from less than 0.01 mg/L to 0.3 mg/L. For corals in reef aquaria, such phosphates should be 0.2 mg/L or less. Phosphates are non-toxic to fish and most invertebrates, but are ideally kept below 1 mg/L to minimize algae growth. In freshwater, phosphates are not critical and the allowable concentration is dependent on variables such as nitrate, manganese, iron, and vitamin concentrations, as well as the extent of use of live plants.

    MultiTest™ Phosphate measures inorganic phosphate to less than 0.05 mg/L, producing a unique easy to read yellow-green-blue color range in marine and freshwater; however, usually, freshwater phosphate concentrations will be beyond the range of this kit, and dilutions of the sample with distilled water will be required. It performs over 75 tests and contains a reference sample for validation.


    75 Tests

    MultiTest™ Phosphate performs over 75 tests

    And with the multi-cavity test plate, multiple tests can be run at the same time.



    Measures between 0–3.0 mg/L phosphate


    Detectable changes on the color chart in 0.001–0.1 mg/L increments

    Reference Sample

    It isn't necessary to run a reference test to use this kit; however, its proper performance can be validated by running a test in the normal manner except that the reference sample is used in place of aquarium sample. You might choose to run a reference test if you have cause to believe the test is giving incorrect results.

    Color Chart

    All MultiTest™ test kits come with an easy-to-read color chart. It features a 5 cm viewing window to help isolate color and match as closely as possible to the test sample

    Opaque Multi-Cavity Test Plate

    All MultiTest™ test kits are read from an opaque white test plate. The sliding color chart along with the six-cavity test plate allows for easy reading and comparisons of several samples at the same time.

    MultiTest™ Phosphate Kit Contents

    • Phosphate Reagent 1
    • Phosphate Reagent 2
    • Phosphate Reference
    • Stir Rod
    • Sample Pipette
    • Phosphate Color Chart
    • Multi-Cavity Test Plate
    • Instructions


    KEEP AWAY FROM CHILDREN! This kit is not a toy. Reagent #2 contains sulfuric and molybdic acids and is corrosive! It may be hazardous if used carelessly or contrary to instructions. Reagents are corrosive to skin, metals, and fabrics. Avoid contact. Protect work surfaces with plastic liner or newspaper. If accidental spillage or contact occurs, wash and rinse exposed area thoroughly with water. If eye entry occurs, rinse eyes immediately with water for 10 minutes and then seek medical attention.

    Payment & Security

    American Express Apple Pay Diners Club Discover Meta Pay Google Pay Mastercard Shop Pay Visa

    Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

    Estimate shipping

    You may also like

    Recently viewed