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Salifert Phosphate Test Kit
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Salifert Phosphate Test Kit

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Item #: SF1133

MSRP: $41.99 Save: $20.00 (48%)
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Quick Overview

Salifert Phosphate Profi-Test 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 ca...
Product Description

Salifert Phosphate Test Kit Information

Part #: SI028-4

Salifert Phosphate Profi-Test
  • 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.
  • The Salifert Phosphate test kit detects, in less than 5 seconds, the level of phosphate present.
  • 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.
  • Sufficient for 60 tests.
  • Can be used for marine, fresh and garden pond water


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

Irritating: PO4-1 contains < 3.5 M HCL.

R36/37/38: Irritating to eyes, respiratory system and skin.

S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

  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 color shart on a part of the chart which is white and compare the colors looking from the top. Read the corresponding phosphate content. An intermediate color corresponds to an intermediate phosphate content.

    The phosphate values are in ppm Phosphate. If you prefer a reading in ppm Phosphate-Phosphor then divide the reading by 3 or use the table given below.
Higher Sensitivity
Should you require an even higher sensitivity then double the water sample and the reagents. The scale should then be divided by 2.


No Manufacturer Warranty


Phosphate Table
ppm Phosphateppm Phosphate-Phosphor
0.03 (good)0.01
0.10 (critical)0.03
0.25 (coral growth retarded)0.08

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Salifert Phosphate Test Kit Reviews

Average Reviews

Customer Reviews

the best Product Review by Aaron (Posted on 1/23/11)

Comments: Every Salifert test kit ive used is super easy to follow, and extremely accurate with easy to read results, well worth the extra money to really know what your true test results are

Salifert Phosphate Profi-Test Product Review by ADAM BAGGETT (Posted on 8/23/12)

Comments: The quality of this product is very good and what you would expect from these test kits.

Simple Test Product Review by JOSEPH NICHOLS (Posted on 7/22/10)

Comments: This test is simple to use...very clear directions. Also a low range test, however the scale is hard to read. If you have glasses, wear them, because you"ll need them to distinguish between the very similar shades of blue....one thing for sure though, you can definitely tell if your phosphates are TOO high.

I would recommend this for the hobbyist that needs a general idea of phosphates...if you need very clear accurate results, don't buy this test.

Great test kit Product Review by chs (Posted on 12/16/09)

Comments: Some have suggested that phosphate test kits are difficult to use, but if this one is representative, I don't see the difficulty. Drip in some drops; stick in the reagent; swirl. Read the color. Pretty simple. My only complaint is that it would be great if the instructions could be summarized on the back of the color comparison card --- all you need is a crib sheet after you've done the test once or twice. I also didn't compare the results with other test kits, so I can't remark on how well it performs where it counts --- but the results seemed to match what I was observing in the tank.

Works well Product Review by CHRIS EDWARDS (Posted on 3/14/08)

Comments: Works well

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