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Home » Saltwater Aquarium Supplies  » Testing Equipment  » Monitors & Controllers  » Single Item Monitors & Controllers  »  American Marine Pinpoint Nitrate Monitor
American Marine Pinpoint Nitrate Monitor

American Marine Pinpoint Nitrate Monitor

Average Rating 1.5 9
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American Marine Pinpoint Nitrate Monitor Information

Product Manuals & Documentation

American Marine is proud to introduce the PINPOINT™ Nitrate Monitor. The only truly affordable and accurate digital Nitrate measurement instrument engineered for marine saltwater. The PINPOINT™ Nitrate Monitor has been designed as a precision spot-testing instrument. There are 2 independent measurement ranges: Low Range is 1–10 ppm nitrate and High Range is 10–100 ppm nitrate. Resolution is 1 ppm in either scale. Accuracy is 1 ppm after calibration. The PINPOINT Nitrate Monitor is sold complete with meter, probe and all calibration fluids (9 volt battery not included).

*Please Note: For use with saltwater only.


  • Monitor 5.5" x 3"
  • LCD display
  • Probe 8"
  • Cord: aprox 6`
  • Please Note: For use with saltwater only.

Manufacturer Info

American Marine Pinpoint Aquarium Supplies
American Marine was founded in 1989 by a devoted aquaculturist who was passionate about quality and precision. Back in the late 80s, critical water quality parameters were mostly tested with colorimetric test kits. Some digital instruments were borrowed from university or laboratory sources with mixed results but always a high price tag. Expensive European aquarium equipment was always a disappointment when it finally arrived. Inexpensive "pens" gave no better results than color test kits and prematurely failed even when testing for approximate readings.

Using the most current technology and design, American Marine introduced Pinpoint Monitors, which have become the most respected line of digital instruments in the aquaculture business. American Marine was the first to introduce a 2-year warranty on each and every monitor. For every purpose, from a goldfish bowl to a salmon hatchery, Pinpoint Monitors are called into duty every day because of their rugged design, precise readings and reasonable cost. American Marine has sold Pinpoint Monitors on every continent. Each monitor is powered by a standard 9 volt battery that is available worldwide.


No warranty on probes

American Marine Pinpoint Nitrate Monitor Reviews

Average Rating
(9 reviews)
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don't waste your time

Reviewers Rating Unsatisfactory

Posted: 9/18/2015 from Houston, TX UNITED STATES
1.0 5
Experience Level: Expert

Comments: Does not work. Will not calibrate no matter how many times you try

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Not Satisfied

Reviewers Rating Unsatisfactory

Posted: 3/24/2014 from Penn Yan, NY UNITED STATES
1.0 5
Experience Level: Intermediate

Comments: My experience was similar to others. First probe was just all over the place. Company was very nice and sent out another probe after I returned the first one. That one did work but seemed to need quite a bit of recalibrating. Turns out you have to buy a new 150$ probe every 6 months to 2 years depending on the luck of the draw. Way too much money and even the standards you buy to calibrate it are fairly overpriced. When this probe dies, I won't be buying another.

4 of 4 People found this review helpful, did you? Yes No

waste of money

Reviewers Rating Unsatisfactory

Posted: 8/24/2013 from LITTLE ROCK, AR UNITED STATES
1.0 5
Experience Level: Intermediate

Comments: I purchased the calcium and nitrate monitor. I made multiple calls to the company and although they were nice, I could never get these to work. After many hours trying to use these, they now sit in my stand untouched. WHat a waste of money.!!! I will never purchase another of those products.

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Useless Product

Reviewers Rating Unsatisfactory

Posted: 4/16/2013 from GA UNITED STATE
0.5 5
Experience Level: Expert

Comments: I bought this "monitor" in April 2012. It never functioned as advertised nor was it even close to reliable. Measurements differ substantially from one sample over just a few minutes. Manufacturer also fails to disclose that reading needs to be multiplied by 4.4. When Lou Dell (the owner) asked to correct problems, he attributes every defective product issue to "user error". He also requires purchaser to pay all shipping costs to return the product to him for “further testing”. I would rate this American Marine product as "expensive junk" just like all other of the Pinpoint products. Just check out the many reef blogs which rate this product the same. Buyer beware!!!

5 of 5 People found this review helpful, did you? Yes No

Nitrate Monitor

Reviewers Rating Below Average

Posted: 12/2/2009 from OLDSMAR, FL UNITED STATES
2.0 5
Experience Level: Intermediate

Comments: I've tried using this for about 8 months now. 90% of the time I got an error message. When it did register a number I was not confident in its accuracy as it could not reproduce it twice in a row. Even after recalibrating it every time with the standardized solutions it could not even read them back when I tried to use them as a test run. I sent it back to Pinpoint Marine 3 times and although the rep was very nice and prompt he could never find anything wrong with it. He had some helpful hints on how to use it but I still get error messages 90% of the time. The other monitors are great but unfortunately this one is not worth the price.

9 of 9 People found this review helpful, did you? Yes No


Reviewers Rating Unsatisfactory

Posted: 12/26/2008
1.0 5
Experience Level: Intermediate

Comments: I purchased one less than 8 months ago and every time I try to recalibrate I get an error message er_p. When I go to the AM web site it seems there is no way to contact them to return it for testing! I will order new calibration fluid and try again and if that doesn't work give up. Right now I trust the chemical test method more!

3 of 4 People found this review helpful, did you? Yes No

not too sure

Reviewers Rating Average

Posted: 10/1/2008 from DAVIS, CA UNITED STATES
3.0 5
Experience Level: Intermediate

Comments: Like the pinpoint and saliity monotors. This device is not intended for continuous 'monitoring'. I was needing to calibrate it before each use and found it taking longer to calibrate and run my tests than it does to use my standard chemical nitrate test kit. So there is really no time saving here. The obvious major advantage over chemical nitrate test kits is the digital readout. Like most, I find color charts difficult to read. IMPORTANT - DON'T GET IT WET!!! Mine died from a small amount of salt water splashing on the display. I don't think I will buy another one because of the high price.

24 of 24 People found this review helpful, did you? Yes No

Save your money!

Reviewers Rating Unsatisfactory

Posted: 3/19/2008 from EL DORADO, AR UNITED STATES
1.0 5
Experience Level: Expert

Comments: I took a risk to try this probe out. Problems are that it does not hold its calibration and that you have to recondition the probe before each use. On avarage it takes at least 30 minuits to get a result. Not happy! Sometime in the future Ill compare the results in my lab with an IC.

8 of 9 People found this review helpful, did you? Yes No


Reviewers Rating Excellent!

Posted: 1/20/2008 from SUGAR LAND, TX UNITED STATES
5.0 5
Experience Level: Expert

Comments: Outstanding knowing exactly Nitrate levels in aquarium and effluients of reactors. Probe must be kept very clean to be sure to get proper reading

14 of 24 People found this review helpful, did you? Yes No

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