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All my water is from RO/DI water, how do you calibrate this?
You calibrate it using the included 35ppt/1.026 calibration solution. The solution is a known standard, so you put that on the slide and then adjust the refractometer to 35ppt/1.026.
The refractometer is set up for levels around 1.026 SG or 35 PPT. Unfortunately these are not designed for brine water levels. Feel free to let us know if you have any further questions!
This will have an adjustable eye piece for focus. Feel free to let us know if you have any further questions!
When calibrated the accuracy will be +/- 0.01 SG. Feel free to let us know if you have any further questions!
Refractometers are one of the best pieces of equipment an aquarist can purchase. It not only ensures accurate measurements of salinity but it is also infinitely easier to use and read.
Range: 1.000 - 1.070 SG
Comes with the following:
- Carrying Case
- Screw Driver for calibrating
- Adjustable eyepiece
- Salinity Calibration Fluid. Calibrates to sg 1.026 (35ppt)
Steps to calibrate your unit:
1) Using the dropper place a few drops of the solution on the glass and close the lid.
2) Looking through the unit and turn the screw until the unit reads sg 1.026 (35ppt)
3) Screw the cap back on your calibration solution for storage. It is important that the cap is on tight or water will evaporate and ruin the solution.
*** Do not calibrate using RO/DI water as this will not give accurate readings for saltwater aquariums***
Spot on By Michael on 10/15/2016Michael would recommend this product to a friendWorth every penny, spot on.
Easy to use and accurate. By Scott on 10/11/2016Scott would recommend this product to a friendThis a very nice unit for the price. Comes with everything you need to calibrate it, instructions and a nice case to store it.
Seems good so far By Hambone on 10/7/2016Hambone would recommend this product to a friendSeems good so far
Works as described By Travis on 10/6/2016Travis would recommend this product to a friendThe unit is easy to calibrate with the included solution and works as described. The only issue is that i'm not totally convinced it's worth double than those found on amazon. The unit isn't brand named, and the included instructions have tons of grammatical errors.
Just for kicks, I compared this to a hydrometer I had laying around. The hydrometer read 1.023 while the refractometer was 1.025. The first thing you should do is buy one of these and throw your hydrometer in the recycle bin.
Must Have for Saltwater Tanks By Steelsoul on 8/15/2016Steelsoul wouldn't recommend this product to a friendThe summary says it all, this is a must have for all saltwater aquarium owners. The refractometer comes preset for the most part, just make sure its in focus used like a monocular. Open clear lid, use eye dropper that's provided with kit to get a drop of water you want to test, close lid and hold it up to light, very easy to read and super accurate. I realize your thinking $40 for a refractometer or like $8 for a cheap float type, well just pay the $40 you will never regret it! The $8 cheap float will prolly work for a yr and wont be half as accurate as the hydrometer and until your fish suffer cuz your salinity is off and you cant tell because of the cheap float and you figure it out after losing your $100 fish or more. It comes with calibration fluid in case calibration is off, just buy it even a novice and follow the instruction on use.
A Must For All Reef Tanks By Yuri on 8/1/2016Yuri wouldn't recommend this product to a friendI don't know why I waited so long to get a refractometer, this is so much easier and more accurate than a hydrometer. Bundled with the calibration fluid is a plus, even if you look at Amazon if you purchase the refractometer plus the calibration fluid it is around the same price, I'd rather order from BRS because I know what I am getting.
great tool, easy to use By sweetelfmaiden on 7/18/2016sweetelfmaiden wouldn't recommend this product to a friendeasy to use. comes with calibrating fluid, very handy. instructions are clear. I like the storage case which offers good protection.
Accurate By Dale on 6/27/2016Dale would recommend this product to a friendProduct is very accurate and well built. Highly recommend.
Great Product By Mark on 6/23/2016Mark would recommend this product to a friendI have the Milwaukee M887 digital refractometer and I have to say that I think this ATC refractometer is much more reliable. Using the calibration fluid with this device is a breeze. Simple to use and this is a must have item for any saltwater hobbyist. I recommend this over "big green".
Excellent By Dan on 6/13/2016Dan would recommend this product to a friendVery good quality, easy to calibrate, easy readings.
Super and accurate! By FLSharkvictim on 5/6/2016FLSharkvictim would recommend this product to a friendI don't know how I been getting by with the Instant Ocean Hydrometer that I have been using for all these years! I finally broke down and bought the Refractometer. Wow, what a big difference between the two reading that i was getting.. I was getting a reading of 1.028 w/ the Hydrometer and w/ the Refractometer my reading was perfect 1.023, right where I like to keep my tanks at. If you're going to get into this hobby this is a must buy! HIGHLY recommended...
Accurate & Consistent Measurements By Paul on 5/4/2016Paul would recommend this product to a friendMultiple measurements are consistent and with the 1.26 calibration solution they are accurate.