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Your cart is empty.Product Description
Product Features
ATC Function
The Automatic Temperature Compensation feature reduces the impact on reading accuracy owing to water temperature changes.
Dual Range Scale
The SunGrow Aquarium Refractometer measures specific gravity and salt percentage.
The salt percentage ranges from 0-100% where 1% means one part per thousand or in other words 1000 parts per million.
The specific gravity ranges from 1.000 to 1.070 g/cm3.
Product Content
You will receive everything in one box. Hence, you do not have to go looking for a tool or equipment to measure the salinity in your water body. The product contains the following -
- A firm plastic case
- A refractometer
- A cleaning cloth
- A screw driver
- An operating instructions
- A suction tube
Step 1
Step 2
Step 3
Step 4
Intended Use
Aquaculture
In different oceans the salinity will vary from 5 ppt in the Northern Baltic Sea to 40 ppt in the Northern Red Sea.
Laboratory Testing
Please note This is an optical instrument that requires careful handling and correct storage. Do not immerse the instrument into any water, and do not expose to any corrosive and abrasive chemicals.
Coral Reefs & Marine Aquariums
Usually, a stable level of 35 ppt is ideal for most reef tanks and marine aquariums. The level that you keep your aquarium at, should be determined by the type of animals that you keep in the tank. If you only have fish in your saltwater aquarium, you will need to maintain lower salinities, at levels of 29 ppt. This will exert less osmotic stress on your fish. Reef systems, on the other hand, will thrive with stable levels of 35-36 ppt.
Martina Claudio
Reviewed in Italy on March 27, 2025
Ho scelto questo modello della Sungrow perché aveva buone recensioni online e mi sembrava un buon compromesso tra prezzo e qualità. Devo dire che non mi ha deluso. Ho anche apprezzato che spesso questi rifrattometri vengono forniti con una piccola soluzione di calibrazione e un panno per pulire il prisma.Calibrarlo è un'operazione semplice, la sua funzione specifica per l'acqua dell'acquario è un grande vantaggio, perché la scala di misurazione è ottimizzata per i valori che ci interessano.Utilizzare questo rifrattometro è davvero semplice. Basta prelevare una piccola goccia d'acqua dall'acquario con la pipetta inclusa (solitamente fornita, nel mio caso c'era), depositarla sul prisma dello strumento e poi guardare attraverso l'oculare puntando verso una fonte di luce. La linea di demarcazione che si vede indica il livello di salinità. È molto facile e veloce.Io mi sono trovato benissimo e lo consiglio.
Cait
Reviewed in the United States on February 24, 2025
I got this for my tank because I was looking to move to a bigger tank and it was really helpful. Super easy to use, the kids liked looking into it too.
James fisher
Reviewed in the United States on March 28, 2024
Honestly they send you a refractometer just as described but you need calibration liquid to calibrate and also need a tiny glasses screw driver to adjust.... honestly why not include those items
Robert
Reviewed in the United Kingdom on December 23, 2024
Good quality works well
Miryam
Reviewed in Spain on March 11, 2023
Muy práctico, fiable y vino enseguida! 👍🏼
Sunshine
Reviewed in Germany on November 7, 2022
Das erste mal dass ich ein Refraktometer besitze. Die meisten kosten zwischen 20 € bis 40 €, was kann man da für nur 10 Euro erwarten? Hinweis: Hat Anfang Nov. 2022 nur 10 € gekostet. Die im unteren Preissegment scheinen alle dieselben zu sein, dem Aussehen nach.Ich musste meines nach Ankunft nicht kalibrieren, die Werte stimmten auf Anhieb. Anleitung ist auf englisch (für mich kein Problem) und befindet sich im Gehäuse unter dem Schaumstoff im Deckel - muss man erstmal finden. :-)Ich habe drei verschiedene Proben entnommen:- dest. Wasser 0‰ Salinitität = korrekt- Meerwasser 33 ‰ Salinität = korrekt, genau so wie es auf der Meer-/Riffsalz-Verpackung stand- Meerwasser 53 ‰ Salinität = korrekt, genau so wie ich es mit der Feinwaage abgewogen hatteBisher kann ich nicht klagen, habe aber nicht auf die Dichte geachtet, da für mich die Angabe der Salinität ausreicht. Ist auch eher simple Technik, da braucht es keine 40 Euro für so ein Gerät. Es ist ein Prisma drinnen und eine automatische Temperaturkompensation (physikalisch, ganz ohne Batterien). Das kann auch jeder kleine Chinesenladen herstellen. ;-)
Steven Ivan
Reviewed in the United States on June 26, 2021
So after a few hours of trying to figure out what I'm looking at, I think I got it. I'm assuming that it's a Brix scale.The equation is SG=1+((Brix*4)/1000)An easier way to think of it is to just multiply the reading by 4, and tack it on the end of 1.000.Example: Reading was 5, so 5*4=20, SG= 1.020Of course I have no way to verify this because my SG should be around 1.020 and according to this it's 1.014. Now, do I continue wasting my time with this thing or get a new one? I really hate false advertising. What a terrible product.
Customer
Reviewed in France on April 11, 2021
j' attends la solution étalon pour juger de la précision
RockmodeNick
Reviewed in the United States on January 6, 2020
I can see why this is the industry standard, it's easy to use, easy to calibrate, accurate, and comes with a nice foam padded hard case and pipette. The pipette is a cheap plastic one, but it is there, and for aquarium use, it should still last a decade.
Dennis Mcgrath
Reviewed in the United States on June 1, 2018
This works extremely well. I used a floating arm hydrometer for years, and once I purchased this, it's more reliable, easier to use. Wish I would have bought one of these sooner.
Marvin F..
Reviewed in the United States on October 3, 2018
I was unsure that this product would work based off of the price however, it works great. It is easy to use, calibrate, and see the salinity of the water. I had someone check it against a high end Refractometer and it produced the same results. If you are looking for a good product at a reasonable price this would be a great purchase.
Kevin Lanham
Reviewed in the United States on October 12, 2018
New to saltwater aquarium so I learned that I would need something like this to measure the amount of salt in the water. For the price, i went ahead and purchased it. After watching a few videos, it was easy to learn to use and provided consistent results. A must have for salt water tanks where this is such a big issue. Feels solid and not cheap. I would expect it to last for years.
Matt Z
Reviewed in the United States on July 30, 2017
For years I've used the plastic salinity hydrometer. It disturbs the fish and was a little messy. When it would dry, the floating needle would get stuck and I'd have to wet it and than shake to get it to move freely. It worked (sort of), but I didn't feel comfortable that I was getting accurate readings.Also for years I'd hear that a refractometer was the best way to measure salinity. However, I had been turned off by the pricing and was under the impression that tricky calibration was a must. It sounded like a laboratory instrument that would be fussy and require constant attention.Wrong on all counts. Pricing on this (around $15) cost a little more than the plastic version. Calibration was a snap - put a few drops of RO water on the glass, close the flap, look through the viewer and turned the screw until the line was at zero. That was it. Using is even easier, as you do the same thing with tank water but without the calibration step. The whole process takes literally just a few seconds.Definitely easy to use, but you do need to hold it up to a brighter light to get a clear reading. There is a blue line that will indicate the exact salinity level. No guessing and no estimating.I highly recommend for the serious saltwater aquarium enthusiast.
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