Aquarium Salinity Refractometer with ATC Function,Saltwater Test Kit for Seawater, Pool, Aquarium, Fish Tank…Dual Scale: Specific Gravity & Salt Percent
$18.99
Price: $18.99
(as of Oct 16, 2025 12:42:10 UTC – Details)
From the brand
aichose is a professional brand of supplying various kinds of liquids measurement instruments.The refractometer series are based on the principle that the refractive indices of liquids change when the concentration change. It features high-quality optics with smooth focusing. Its main body is made of aluminum alloy. The internal optical lens with high refractive index make up the precision optical system.
aichose refractometers
aichose refractometers
Is Discontinued By Manufacturer : No
Product Dimensions : 7 x 1.5 x 1.5 inches; 3.68 ounces
Item model number : 8541957181
Date First Available : September 11, 2016
Manufacturer : Xindacheng
ASIN : B01L2OX9KA
Best Sellers Rank: #87,086 in Pet Supplies (See Top 100 in Pet Supplies) #123 in Aquarium Test Kits
Customer Reviews: 4.7 4.7 out of 5 stars 778 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); } }); });
DESIGNED FOR – testing the concentration of saltwater, help you to monitor and control the concentration of salt water.
WIDELY USE – Can be used for Aquariums, Marine Monitoring, Agricultural, Gardening & Educational Purposes.
EASY , ACCURATE & AFFORDABLE – This refractometer is more accurate and easier to use than traditional hydrometers, more affordable than digital refractometers.
DUAL SCALE — Provides reading of 0-100PPT(parts per thousand ) and corresponding specific gravity range 1.000 to 1.070. You can get the both result at just one test.
AUTOMATIC TEMPERTURE COMPENSATION –The build-in Automatic Temperature Compensation feature makes it get consistently accurate reading, no need to control the liquids temperature deliberately, just make sure it’s at roomtemperature .
Customers say
Customers find the refractometer accurate when calibrated against a hygrometer and appreciate its functionality, with one noting it works perfectly for reef aquariums. The device is simple to calibrate and use, and customers consider it worth the money, with one mentioning it’s particularly useful for saltwater tanks. While some customers find it easy to read, others find it difficult to read, and opinions about build quality and durability are mixed, with some finding it well-built while others describe it as flimsy.
8 reviews for Aquarium Salinity Refractometer with ATC Function,Saltwater Test Kit for Seawater, Pool, Aquarium, Fish Tank…Dual Scale: Specific Gravity & Salt Percent
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$18.99
Tony E Tampa Fl –
Works perfectly
This product does exactly what it says easy to adjust to zero and stays consistent 1000 times worth the money!!!
Gary N –
Easy to use, mostly accurate, impressed with its performance compared to commercial equipment
Very impressed with the capability of this instrument for less than $20. When compared to our commercial quality (YSI) equipment, the inexpensive device performs really well. Unfortunately, calibrating with distilled water was not a good ‘zero’. Once calibrated against the YSI, the meter then held its own.My suggestion is to calibrate it once, then use it for measuring relative adjustments in salinity. Or, mix your own PPT by salt and water weight (see youtube) then you can get your tank back into its original condition, but you may not know precisely what your salinity PPT is. The meter is quick and easy to use, so maybe measure the pet shop’s water then make yours match whatever reading you obtain. 🙂
Peter N. –
Great! …But not for homebrewing
I love this refractometer but I’m going to have to return it.After getting this, I calibrated it against deionized water. After using it on my first mash, I got a reading that was off by about 0.020 (1.050 reading instead of 1.030). Later on, playing around with deionized water, sugar and salt, I discovered that this instrument is very accurate with salinity but not very accurate with dissolved sugars when compared to a hydrometer (LD Carlson 5451). I don’t know why or how this could be but it is. Various concentrations of sugar solutions were off on the refractometer compared to the hydrometer, and the greater the concentration the further off the reading. [I did correct the readings for temperature and they were still off.] However, when I tried the same experiment with a salt solution the readings were exactly correlated. Looking back at the product pictures, I see now the scale reads “salinity” with no reference to “wort”.I cannot figure out how there would be a difference between specific gravity of salt vs. sugar solutions, but based on my home-experiments with this refractometer, there are. I suspect this would be very good for aquariums.For now, I am going to replace this product for when that is specifically advertised for homebrewing.
Sharp710 –
Great
Works great, good deal, and came fast.
jamiee4446 –
It works but I screwed it up and I just can’t figure it out so I don’t use it
For me this is no good..Love the electric one hundred bucks
Amazonder –
Non electronic. Works on physics.
I’m using to add a little salt to my aquarium when my Betta is sick. The scale is too wide for this small amount of salt, but better than a guess. I use a flashlight to light the scale.
bc pennybags –
Why my delay?
I canât believe I didnât invest in one of these earlier. Calibration was easy with a slight turn of the included screw driver, I was all set. The screw driver doubled as a tool to clear my air intake tube on my Protein Skimmer. No guessing with my old hydrometer and the surface tension/meniscus inability to get an exact reading. Focusing was typical and simple to do. A must have for a saltwater aquarium.
David and Melissa Holliman –
WHERE HAVE YOU BEEN ALL MY LIFE???
I CAN’T EVEN EXPRESS HOW WONDERFUL THIS PRODUCT IS. I WAS SCARED OF IT AT FIRST, THINKING IT WOULD BE CUMBERSOME AND DIFFICULT TO USE, BUT IT IS ABSOLUTELY EASY! YOU JUST PUT A DROP OF WATER ON THE GLASS, DROP THE PLATE OVER IT, AND HOLD LOOK THRU IT WHILE POINTING IT TOWARD A LIGHT SOURCE. THE GAUGE IS SUPER EASY TO SEE / READ. SO MUCH MORE ACCURATE THAN OTHER DEVICES I HAVE HAD, AND I CAN TELL THIS ONE WILL LAST FOREVER.