NYOS Phosphate (PO4) Reefer Aquarium Test Kit
$31.99
Price: $31.99
(as of Nov 10, 2025 18:53:06 UTC – Details)
NYOS PHOSPHATE REEFER TEST KIT
If your looking for a presice and accurate PO4 phosphate test kit then the
NYOS test kit is for you. They are very accurate and very high quality test
kits and some of the best priced available. Using less solution makes them
even more accurate and easier to read the results.
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:
Highly precise analyses for seawater conditions. Furthermore, 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.
Number of Tests: 50
Is Discontinued By Manufacturer : No
Product Dimensions : 5 x 4 x 2 inches; 5.6 ounces
Item model number : WT-PO4R
Date First Available : January 21, 2015
Manufacturer : NYOS Aquatics
ASIN : B00ONI39QW
Best Sellers Rank: #179,232 in Pet Supplies (See Top 100 in Pet Supplies) #268 in Aquarium Test Kits
Customer Reviews: 4.1 4.1 out of 5 stars 46 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
See Description
Customers say
Customers find the phosphate test kit to be of good quality, with one customer noting it performs better than API products. The accuracy, ease of use, and readability receive mixed feedback from customers.
Carol L. Mccawley –
Finally, a test kit that works
It is nearly impossible to find a low range phosphate test kit. Much alone one that is easy to use/read.After some trial and error, I found this kit and well…… that is that. it is the only kit I will ever use again.Having a 2gal reef tank requires I keep low levels of phosphate and the ability to manage such a low level with correct reading was impossible and a guessing game until this kit was discovered.I also have the Nitrate test kit from the same manufacturer. And it too is just as easy and accurate to use.
Lonnie J –
Very easy to read
Very easy to read compared to the API test kit except the low reading only goes down to 0 and is only read in whole numbers. Got those needed a reading lower than 0 you need a different kit.
Charles –
Hard to use
This test was hard to use. I was never confident with the result. Go with the Hanna. Spend the money and be confident the parameter reading is correct.
Amazon Customer –
Simple and easy
Much better than API. The api test only goes to 0.25 and 0. Algae can still become a problem between that range. This is a really fast test. My only complaint is that the very light colors are indistinguishable.
Rolando B. Fauni –
Hard to differentiate results below .1
Made of quality elements. Read and follow instructions carefully inside the manual and not the one at the back page. The results are hard to distinguish below 0.1 so I used a magnifying lens under a bright light. I’m guessing it’s because phosphate levels below 0.1 are insignificant already. My conclusion is that the closer to white1/white2, the better.
Placeholder –
Easy to read
Best phosphate kit Iâve ever used
D. Marotta –
Five Stars
Good product
StephenShh –
Two Vials; Only One Cap
Two nice, solid vials but only one of the two came with a screw-on cap. Not certain what that is all about but it opens the door for contamination of one vial after filling with tank water. The color comparison chart is printed on a piece of large, cumbersome, coated paper. Mine got wet on first use. Otherwise, comparable to other hi-res kits I’ve used. Seems accurate when tested against both a Hanna Checker and the Red Sea kits.
Cliente Amazon –
Tester per fosfati comprato come alternativa ai più cari e blasonate marche.Ho comprato in accoppiata anche il test per i nitrati.Scatola in cartone resistente, libretti al suo interno plastificati (così che non si rovinino con l’acqua) e kit di analisi.Scala di colori molto ampia per poter apprezzare al meglio che valori di fosfati sono presenti.Ho fatto confrontare le analisi fatte a casa con quelle fatte al negozio di fiducia e sono equivalenti.Molto soddisfatto!!
lucio –
Ottimo test, affidabile con una buona scala colorometrica e facilità di confronto attraverso le due boccette
paolo –
Tutto ok
Bad_Fish_85 –
Habe den Test mit einer Refenzlösung getestet und die Abweichung war nur minimal. Das Ablesen der Farbskala ist einfach und genau. Mehr will man doch nicht.
Christian Daume –
Ich bin sehr zufrieden mit dem Test von nyos werde ihn weiterhin benutzen und auch die anderen Tests mal ausprobieren