Brix Refractometer with ATC, Dual Scale - Specific Gravity & Brix, Hydrometer in Wine Making and Beer Brewing, Homebrew Kit

Since this unit includes an SG Wort scale (specific gravity of wort), do not assume this is a universal specific gravity measurement. The SG is calibrated for wort, but can be used with other liquids if you know the math.Refractormeters work on the principle of measuring refractive index. Since there is a known relationship between the refractive index (ri) and specific gravity (SG) for a particular liquid, the reticle on this model scale is graduated to read Brix for sugar solution and SG for wort only.Some negative reviewers have commented that their aquarium's salt content was way off using this device. They should either use a refractometer with a scale specifically for saline, or do some math while using this unit.This model is made for Brix (sugar solution concentration), and SG Wort (specific gravity of wort). These are the formulas for conversion:SG Wort as function of Brix:SG Wort = (Brix / (258.6-(Brix / 258.2)*227.1)) + 1Brix as function of refractive index (ri):Brix = 0.0087 + 699.82353*(ri - 1.3330) - 1801.9215*(ri - 1.3330)^2+ 4696.422*(ri - 1.3330)^3 - 6427.26*(ri - 1.3330)^4For extra credit, you can substitute the 2nd formula into the 1st to find SG Wort as a function of ri.For example, if at a certain temperature the refractive index (ri) of seawater is 1.3394 when its specific gravity is 1.0264, you can calculate the Brix and SG Wort values using the above formulas where ri is set to 1.3394:Brix = 4.4SG Wort = 1.017In other words, you need to observe 1.017 in the reticle SG Wort scale to know that a seawater solution has a specific gravity of 1.0264 (and be sure the temperature of the measured sample matches that of the source data). This may explain why some are obtaining readings which do not compare when used for other purposes other than sugar/wort.As far as my experience with the unit, it is sturdy, reliable, and is a great value at this price. Just know what you're getting into.

This is a good refractometer for the money. The one I had for years finally broke so I got this one and it works great. Just remember to calibrate it with distilled water, by putting a small amount on the face plate and then with a very small screwdriver turn the screw to move the blue line up or down to calibrate it at zero. Then test your sample and it will be very accurate.

Why did you pick this product vs others?:Nice product

Works good. Easy to use. Good price.

Easy to use, basic Refractometer. I've had no trouble reading a number of liquids, including wine, tea, home made vanilla extract and fruit juices. Well packaged and in a nice storage case as well. Comes with pipettes, screwdriver, manual and cleaning cloth. (Check under the foam for the manual and cloth).Seems well made.

The media could not be loaded. Just arrived on time and pa lagged packed well. It comes in a sturdy hard case, I really like to help keep things together. It’s made of what feels like strong quality materials some metal some durable rubber, and very hard thick plastics. It’s easy to hold because of its size and it has a none slip grip, that feels great it my hand Instructions Manual is clear and very to readable. It’s in English only. I’m have not used it yet because out of distilled water for calibrating, but I will test the accuracy and update here and report back regarding how functional this device is. But it’s ready to go and small enough to take with you. Very fast shipping!

Metal body, rubber where it needs to be, all the tools and instructions included in the handy plastic box. The refractometer is well made, feels solid to hold with a metal body and will be used for measuring beer original gravity.

Works great with my wine making, just add a little liquid to the rectangle portion and close the flap and hold it up to a light source and view threw the scope part to see the hydrometer brix and alchol percentage reading is how it works. Works very accurately for me and super easy and convenient as you don’t need so much rest liquid and a test tube to dirty.