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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***
Very hard to see in the eye scope By Tony on 1/9/2017Tony wouldn't recommend this product to a friendThis would be my third refractometer. My previous two were purchased at a LFS and worked very well. The numbers were large and light flow was good. I ordered this refractometer from BRS because it was cheaper, and I like getting preferred reefer points.
When it arrived, I immediately tried it out. The numbers were very small, the lines were compact and worse, the light going through the prism was very limited. I turned on all the lights in my house and still could barely see through the refractometer. Compared to my other two refractometers, this one is terrible. I'm not sure why everyone gives it such high ratings, but maybe they haven't used a good refractometer to compare... Or, the one I received was just a defective to start. I emailed BRS to ask for an RMA number for a return.
Great purchase By Eric on 1/1/2017Eric would recommend this product to a friendDidn't know just how far my plastic tester was off....but hey I had it for several years, how old is yours? This tools is easy to use and you won't be disappointed!
Excellent Product and Amazing Service By pray4urlife12 on 12/29/2016pray4urlife12 would recommend this product to a friendDespite BRS being one of the most busy sites, especially around the holiday season, they were able to get me my refractometer well before the promised date. I was running blind on salinity and was moving out in 6 days and BRS took action without me asking. I look at the shipping method in the order email and they bumped me up to 2nd day air. Thank you so much for saving my corals and myself from a headache. I will surely continue to shop here first. This refractometer is solid and accurate. No cheap parts here. Also, thanks for your helpful youtube videos!
Best Investment By Mark on 12/19/2016Mark would recommend this product to a friendIf you want accurate readings then this is the product to get. Dont waste your money on the "fancy" Milwaukee $115 piece of junk just because it has a digital readout. I have the big green nasty Milwaukee and it is junk. The refractometer is the way to go. I calibrate it before I use it every single time because I want to be sure to get an accurate reading. If you are go back and forth between the Milwaukee and this $35 unit......get the $35 refractometer. You wont be sorry.
Does what it's supposed to do By Meredith on 12/9/2016Meredith would recommend this product to a friendEasy to calibrate. Goes all the way down to zero so its useful for running HYPO.
A must By Chuck on 12/3/2016Chuck would recommend this product to a friendI finally bought one. My tank read over 1.03. I am adamant about checking all these parameters, but had no idea how bad my hydrometer was off. The hydrometer is now in the trash. I am just beside myself with disbelief that I waited so long.
Great product By BT on 11/24/2016BT would recommend this product to a friendThe ATC refractometer is simple to use for even the newest beginner to the hobby. It is accurate, reliable and easy to maintain. A definite must for anyone
Built nice and accurate By Johnny on 11/22/2016Johnny would recommend this product to a friendSeems to be very good quality for the price. Calibrates easy and accurately.
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.