Mon-Thurs 7am-5pm PST
Fri 7am-4pm PST

Questions about products, orders, shipping?
Contact us by call or email

NYOS REEFER Test Kit - Nitrate


Item #: 6D92118

In Stock

High sensitivity seawater nitrate test kit
  • highly sensitive reagents
  • professionally calibrated color chart
  • differentiated color gradations
  • precise sliding comparator
  • sample tubes made of glass
Technical Details
  • Number of Tests:40
  • Measurement Range: 1 – 160 mg/l NO3
NYOS® REEFER test kits - taking measurements at the laboratory level at an attractive price

Water properties as close to nature are the key for every aquarium`s success. However, monitoring relevant parameters in seawater is difficult due to numerous interfering ions. Therefore, test kits considering the specific characteristics of seawater are needed to analyse the water precisely.

NYOS® REEFER test kits offer the customer two significant benefits:

One, highly precise analyses for seawater conditions. Two, they offer a highly attractive price-performance ration and make test kits in laboratory quality affordable for the standard hobby user.

Additional characteristics of our REEFER test kits:
  • calibrated dropper made by a German manufacturer ensures uniform drops during all repeat tests
  • reagents are made in Germany in accordance with EN ISO 9001
  • reagents are analysed according to AAS and NIST standards
  • strict batch and quality control
  • easy to use with intuitive pictogram instructions
  • Made in Germany
NYOS® REEFER test kits allows you to achieve precise and most importantly reproducible (i.e. in repeat measurements identical) measuring results.

Specific characteristics of NITRATE REEFER
  • high-precision nitrate test with highly sensitive reagents: Measuring range of 1 to 160 mg/l nitrate
  • professionally calibrated, optically measured to seawater adapted full spectrum colour chart differentiated colour gradations in the lower range
  • black background on color charts for better contrast
  • precise sliding comparator made of black EPS
  • top quality sample tubes made of glass
  • for approx. 40 tests

Manufacturer information

The NYOS® Philosophy: Innovative. Intuitive. Uncompromising. Nature Inspired. NYOS®. Experience simple, nature-inspired marine aquarium care at the highest level.

5 Stars


Reviewed on
April 13, 2021

No, I would not recommend this.

Test Went Bad within 2 Months

Test matched my Red Sea test when I first received it. then continued reading 1-3 ppm for several months. When things started heading south, I checked with Red Sea and LFS to confirm >50 ppm Nitrate. I like their other tests but this one won't be making it back in rotation.

Was this review helpful? 0 0


Reviewed on
March 02, 2021

Yes, I would recommend this.

Nyos nitrate test kit

Great product easy to test Than other test kit products

Was this review helpful? 0 0


Reviewed on
October 02, 2020

Yes, I would recommend this.

Great Test!

Easy to use and interpret results.

Was this review helpful? 0 0


Reviewed on
August 07, 2020

Yes, I would recommend this.

Great test kit

Pros: Easy to read

Cons: None

Easy to use (5min wait on results) and easy to read

Was this review helpful? 0 0


Reviewed on
July 29, 2020

Yes, I would recommend this.

Kit works great

Pros: Simple

Cons: none

Simple steps and easy to read.

Was this review helpful? 0 0


Reviewed on
July 26, 2020

No, I would not recommend this.

Colors don't match card

Pros: None that I can honestly think of

Cons: Readability and usability

This came as a highly recommended test kit, however upon using it to measure nitrates around 20 PPM, I find that the colors in the liquid do not match even closely to the colors on the card. Specifically the colors on the card are different shades of Orange and the color of the solution during the test was a bright yellow. Therefore making it very hard to compare to any of the shades of orange on the card. I also use the salifert nitrate test kit for a source of comparison as well as an API nitrate test kit as another source of comparison. So I was able to use three different test kits to verify my actual nitrates and this was my conclusion regarding the performance of this test kit. From my testing, the salifert test kit was the easiest to read and most reliable. It's also the easiest to administer. However that kit is also far from perfect, however I feel better then this one.

Additional gripes about this test kit is that it is very easy to accidentally put too many drops in the vial. The bottle they use makes it hard to dose the right amount of drops. Additionally the caps for the bottles leak when shaking. This is exacerbated by the fact that they were require you to shake it for minutes.

Was this review helpful? 0 1


Reviewed on
July 02, 2020

Yes, I would recommend this.

Easiest Nitrate Tester on the Market

Pros: Easy determination of Nitrate Levels

Cons: None

The dual vial and color checker makes this the easiest to use nitrate tester.

Was this review helpful? 0 0


Reviewed on
May 29, 2020

Yes, I would recommend this.

test kit

Pros: Easy to read the results

Cons: Price

Works great. Easier to read the results than other test kits I have used.

Was this review helpful? 0 0


Reviewed on
April 27, 2020

Yes, I would recommend this.

good kit

much easier to read than api. i will buy this kit again until hanna makes a nitrate colorometer

Was this review helpful? 0 0


Reviewed on
October 23, 2019

No, I would not recommend this.

Arrived Leaked

Pros: Nice color matching

Cons: Bad reagent enclosure, paper package.

After arrived leaked, it is not so practical to use as Red Sea Tests...

Was this review helpful? 0 0

hide prerender

We use cookies to provide a personalized site experience. By continuing to use & browse this site, you agree to our Privacy Policy.