Aqua Craft Refractometer Calibration Fluid

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Aqua Craft Refractometer Calibration Fluid

100% Recommend this to a friend (46 of 46)

SKU: 205172
$6.99
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Quick Overview

Why does BRS recommend this?


Having a refractometer is one thing, but knowing that it is giving correct readings is even more important.  For not much money at all, refractometer calibration solution doesn’t take any time to use, and works with all digital and sight type refractometers to calibrate or double check readings at 35ppt (1.026sg).


Aqua Craft Salinity Calibration Fluid calibrates to sg 1.026 or 35ppt.

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Product Questions

Is this fluid good to use for the Milwaukee brand refractometer?
Question by: Mark Shimala on Jun 4, 2016 7:15:00 PM
Great question!
This certainly can be used to double check the Milwaukee refractometer. You will want to use RODI or distilled water to calibrate the refractometer, but you can always use the Aqua Craft Calibration solution to reference the reading to 1.026 sg.
Answer by: Connor (Admin) on Jun 9, 2016 2:28:00 PM

Full Details

Aqua Craft Salinity Calibration Fluid calibrates to sg 1.026 or 35ppt.

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Items 1 to 12 of 46 total

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  • Must have item By Dan on 9/4/2016

    Always a good idea to calibrate the refractometer occasionally. This is handy and more accurate than trying to mix my own calibration fluid.
  • Does the job By Fred on 5/1/2016

    This fluid is what it's supposed to be. Not too difficult to explain. The benefit of having it tho, is that your refractometer (analog or digital) will always be on point. Calibration from 0 with RO water isn't that accurate. Even the best test equipment is useless without a standard to calibrate with or compare against. For the hundreds and thousands of dollars that go into having a tank, less than $10 for this fluid is a more than justifiable purchase.
  • DOT ON By Kuba on 4/9/2016

    I ordered 2 bottles to assure same results. dot on same same. Im happy!
  • Nice dropper built into the bottle, good price By Mike on 3/6/2016

    The bottle is easy to use, and wont evaporate much.
  • Would recommend this product to a friend By jerry on 12/1/2015

    Easy to use. Works as advertised. Shipping very fast. Thanks
  • IT JUST WORKS By Jacob C. on 11/17/2015

    Simple to use it will last for a very long time, excellent price.
  • works perfect By Jason Ladon on 9/3/2015

    as advertised. Works wonders
  • Must have product By Michael on 7/29/2015

    I am old school to say the least and always used RO/DI to calibrate my refractometers. Well I admit that method doesn't work !
    Order this product and you will know the truth. Both of my meters were off by as much as 4 points. Now I am confident that my salinity is correct.
    Plenty of fluid and the dropper style top is great
  • Great product By Ed on 7/25/2015

    From the bottle design to the quality of the fluid, everything is great.
  • Aqua Craft Salinity Calibration Fluid By Salty Dog on 6/1/2015

    Excellent product for the $$. Should have purchased months ago instead of having my refractometer checked periodically at the saltwater shop.
  • Accurate By Benjamin on 3/19/2015

    Very accurate. Dropper tip on the bottle eliminates having to use a pipet. Enough in the bottle to last a very long time.
  • Excellent Calibration Fluid By Mr.JD on 3/15/2015

    Perfect solution for calibration of your Refractometer. Don't make the mistake I did buying the Pinpoint Salinity Calibration Fluid it is for salinity probes not Refractometer. Keep the fluid stored in a cool place you don't want any evaporated fluid.