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Seachem Laboratories Multitest: Nitrate & Nitrite Test Kit


Item #: SC4135

In Stock

SeaChem Multitest: Nitrite & Nitrate Test Kit

This kit combines the Nitrite and Nitrate kits into one kit.
  • multi-cavity plate for simultaneous testing of up to 6 tests at the same time
  • sensitive to less than 0.2 mg/L
  • includes reference for test validation
  • marine or fresh water
  • Range: 0-25 mg/L (nitrite), 0-50 (nitrate)
  • Precision: 0.1 - 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
July 09, 2020

No, I would not recommend this.

Decent Backup

Pros: Fast, Cheap, Simple

Cons: Not Consistent

I got this just to double check the readings I was getting from my main nitrate test. The nitrite test seems to match the other nitrite kits I have an the color is easy to read. The nitrate test however is all over the place. I can do 3 tests in a row and they will all be different. The color is also hard to read. The chart is shades of pink but the solution looks more purple which makes it difficult to compare. I'm happy I have this kit as a backup but I would not rely on it as my only test kit.

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Reviewed on
March 15, 2018

Yes, I would recommend this.


Pros: Price, accurate

Cons: None

This is a test kit you can actually read! I bought this to replace my API nitrite/nitrate test because i couldnt distinguish the colors on the nitrate test

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james mueller

Reviewed on
August 06, 2015

Yes, I would recommend this.


This easy and fast. It comes with a control if you have any doubt. Like any color test you must read in a brightly lit room and not be color blind.

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robert t wright

Reviewed on
September 11, 2011

Yes, I would recommend this.

Nice Kit

For something as simple as nitrite and nitrates, this test kit is ideal...

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Reviewed on
August 12, 2011

Yes, I would recommend this.


I bought this to replace my API tester that was awful. The Nitrite test on the SeaChem is easy. Unfortunately the Nitrate test is very difficult to read as the color from 20-50 is virtually the same.

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sean jones

Reviewed on
December 02, 2010

Yes, I would recommend this.

Decent - not great

This is a decent test kit. I like the fact that you get to test both Nitrite and Nitrate. That is good. It is also easy to use. I have not always found it to be the most reliable though.

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paul gorino

Reviewed on
May 11, 2009

Yes, I would recommend this.

Sea Chem Nitrate & Nitrite

It was difficult to see the results accurately on the test strip. Also, the dropper that came with the kit for dripping samples into the tray was not washable. I was not sure if any trace residue from a previous sample was still in the dropper.

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Reviewed on
May 03, 2009

Yes, I would recommend this.

Great Kit

This is the kit to buy! Other kits try and sell you both Nitrite and Nitrate as separte kits. Most of the time mine reads zero, so I don't judge it against a chart. However, in the past I have verified this against the included refernce sample to know I was reading it properly and accurately. It's the fastest to read of all my kits.

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Reviewed on
August 22, 2008

Yes, I would recommend this.

Nitrate Test

I found the color changes confusing, but I'll probably get used to it.

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