Salifert Phosphate Test Kit

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  • Regular price $29.99
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The Salifert Phosphate Test kit detects the level of phosphate present in seconds.  There are two different ranges within the kit: a low range for phosphate-phosphor from 0.01 – 1 mg/L and a medium range for phosphate-phosphor from 0.02 – 2 mg/L.  The kit can perform approx. 60 measurements. Can be used for marine and freshwater.

If phosphate is present in too high a concentration there may be an increase in growth of undesirable algae and if the phosphate level is higher than 0.04 mg/L the growth rate of corals and calcareous algae may decrease by as much as 90%.  Washing fish food (a rich source of phosphates) after thawing can significantly reduce the input of phosphate, and using a high grade, phosphate free activated carbon can also help to keep phosphate levels as low as possible.

Erroneous results might be obtained when the carbonate hardness is higher than 20dKH. This corresponds to an alkalinity of 7meq/l.  Normally the carbonate hardness is well below the above mentioned values. 


  1. Add with the syringe 10ml of water in the test vial.
  2. Add to this 4 drops of PO4-1 reagent and swirl the test vial gently for 10 seconds.
  3. Add to this 1 level scoop of PO4-2 reagent and swirl the contents gently for 30 seconds.
  4. Place the open test vial on top of the colour chart on a part of the chart which is white and compare the colours looking from the top. Read the corresponding phosphate content. An intermediate colour corresponds to an intermediate phosphate content.


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