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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!
These recommendations from the manufacturer are due to the temperature at which the refractometer was calibrated, and in the case of the fluid, the normal aquarium salinity at the typical aquarium temperature. In the case of our use, the temp of the fluid sample will rapidly match the temp of the refractometer, and as these are ATC units, they will adjust for minor temperature differences. What we recommend is that you keep and calibrate your unit at the temp (most likely room temp) at which you will normally take your readings, and try to use a consistent light source as well.
Sorry about the typo there, and thanks for bringing that to our attention! That should actually read accuracy +/- .001 SG!
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***
I like that you can calibrate it! By sh4rkbyt3 on 9/14/2017sh4rkbyt3 would recommend this product to a friendWanted to check the accuracy of my Instant Ocean Hydrometer after reading a few less than good reviews and some complaints on a few forums. Well having to be honest, the hydrometer was spot on in it's accuracy.
One thing I've dealt with through the years is the "know it all's" who seem to think what they use or how they do it is the best. Sometimes that's true but a lot less than you'd think.
This was one of those points I proved to myself. The hydrometer is just as accurate as the refractometer! It's good to be able to check for accuracy though and have a reference point.
Very good product By Troy on 9/5/2017Troy would recommend this product to a friendExtremely accurate and well built.
Great Buy ! ! By Fudsey on 6/25/2017Fudsey would recommend this product to a friendThis is my 1st Refractometer and I love it. It works great and although it may seem hard to see in some light, just reorient yourself to the light and it becomes clear. Just be on the safe side, I calibrate it every time and usually it is spot on. Only had to adjust it a few times.
Good By Nick on 5/11/2017Nick would recommend this product to a friendDoes what it's suppose to.
Love it By DW on 4/21/2017DW would recommend this product to a friendWent from 2 instant ocean hydroneters tbat read different numbers consistently. Not just different from each other, but even after tapping bubbles out I'd never get the same two readings...
Yea, I'm good..
Got this guy and love it. Only complaint is I should have purchased it sooner
Fantastic product By Lerch on 4/2/2017Lerch would recommend this product to a friendThis is my first time using a refractometer and I love this product. Very accurate and easy to use. I no longer worry where my salinity value is at.
A Necessity By Michael on 3/31/2017Michael would recommend this product to a friendBeen out of reef keeping for over 10 years. Starting back up and bought the usual floating dial salinity monitor as I was use to. Saw the great price and had to quickly upgrade. So glad I did salinity levels were not even close floating needle when filling tank said 1.025 checked it with this after quick calibration check and found I was only at 1.021. Glad I was only starting the tank and not relying on the cheap gauge when I begin to add aquatic life to the tank.
Much better than Red Sea By Michael on 3/25/2017Michael would recommend this product to a friendI had the Red Sea refractometer and was concerned that it could lose calibration in minutes. This unit is much easier to read, feels better built, better price, and seems to hold calibration better. Highly recommended.
A must have By Chad on 3/25/2017Chad would recommend this product to a friendI use this constantly. Whether making fresh salt water or acclimating fish or corals it is always being used.
Great item! By Mamatoby on 3/18/2017Mamatoby would recommend this product to a friendWe've needed a refractometer for some time. After searching and searching, I decided to come to brs. I just couldn't trust other sellers. Once received, my husband fell in love with it! It's simple to use. For those that complain about the lines being too close, you either probably want to get your eyes checked or focus it until you can read it. I wear glasses and it was super blurry when we got it. Did some fine tuning and it's perfect now. We love it. We recommend it! Thanks brs!
Perfect By Chad on 3/3/2017Chad would recommend this product to a friendWorks great and is easy to use.
Works Great - Easy to Use By Jason on 1/14/2017Jason would recommend this product to a friendWorks great and easy to use. Comes with everything you need and it makes checking the salt level very quick.