Seachem MultiTest Phosphate - 75 Tests

Seachem Laboratories

  • $ 15.99
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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.

  • Contents:
Phosphate Reagent 1
Phosphate Reagent 2
Phosphate Reference
Stir Rod
Sample Pipette
Phosphate Color Chart
Multi-Cavity Test Plate
  • 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 Multi Test ™ 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.