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Seachem Laboratories Multitest: Phosphate Test Kit

Seachem Laboratories Multitest: Phosphate Test Kit


Item #: SC4141

In Stock

SeaChem Multitest: Phosphate Test Kit

This kit measures inorganic phosphate down to 0.05 mg/L, producing a unique easy to read yellow-green-blue color range in marine and freshwater.
  • multi-cavity plate for simultaneous testing of up to 6 tests at the same time
  • sensor based, sensitive to less than 0.05 mg/L
  • includes reference for test validation
  • marine or fresh water
  • Range: 0.0 - 3.0 mg/L
  • Precision: 0.001 - 0.1 mg/L

Manufacturer information

Seachem Laboratories, Inc. was established in 1980 by Dr. Leo G. Morin. Seachem moved into a state of the art 110,000 square foot facility in Madison, Georgia marking their 25th anniversary in the industry in 2005. This facility includes production and research laboratories, manufacturing, inventory, shipping, and office space.

4 Stars


Reviewed on
October 09, 2017

Yes, I would recommend this.

Does the job.

Pros: Easy steps, able to test in the low ranges.

Cons: Reading color charts always seems slightly objective.

I always do several tests at a time to verify the results. But overall is decently easy to read.

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nyle fields

Reviewed on
August 06, 2014

Yes, I would recommend this.


So easy to use as with all seachem tests.

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Reviewed on
November 16, 2008

Yes, I would recommend this.

Phosphate Test Kit

Good kit....still looking for one that is not too hard to read. My last one was clear = 0 PO4 and kinda clear for some PO4. This one is yellow or yellower for 0 - <1 PO4. Higher P04 readings do turn green which is better than the others that just get a darker shade of blue as the PO4 increases.

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joel green

Reviewed on
March 14, 2008

Yes, I would recommend this.

Fast Testing

Nice test kit. One of the quickest out there to use. Just to comment on the previous rating, the results are to be read between 5 and 30 seconds per the instructions. Always calibrate any test kit with a known sample in solution to confirm it's readings. This even applies to very expensive high end kits.

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mark bellamy

Reviewed on
August 18, 2007

No, I would not recommend this.

Phos test

This test is all over the board. If you let the test sit for 5 minutes it will change colors constantly. Even the sample water that comes with it that is supposed to be at 1.0 reads at first 0.1 and changes color from there over a span of 5 minutes. Don't use this test - accurate readings seem to be impossible.

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