What’s the best refractometer

Zach77

Well-Known Member
BRS Member
IceCap digital, compare with a refractometer (BRS or Marine depot generic brand) every couple months and they always match.
 

FishieBusiness

Well-Known Member
BRS Member
I use the Red Sea unit is none digital but its easy to calibrate made it appealing to me. You can zero it in with DI water. This can be done every time you use it if you chose. I check mine but 4-6 weeks. A gallon of DI water will last you forever as very little is used to calibrate and it's a few dollars.
 

dz6t

Acro Garden, BRS Sponsor
BRS Member
As long as the refractormeter is calibrated correctly, they are the same.
Higher quality Refractometer can be calibrated by distilled water, most $20 to $50 ones need to be calibrated with calibration solution, normally at 35 ppt.
This is due to the quality of the optic that affects it linearity throughout the range.

I can calibrate your refractometer for free.
 

deanburchell

Well-Known Member
BRS Member
I too am using the IceCap Salinity/Temperature Digital Pocket Tester. It's relatively inexpensive, seems reliable and much easier than a 'manual' optical refractometer.
 

jasonrusso

Non-member
As long as the refractormeter is calibrated correctly, they are the same.
Higher quality Refractometer can be calibrated by distilled water, most $20 to $50 ones need to be calibrated with calibration solution, normally at 35 ppt.
This is due to the quality of the optic that affects it linearity throughout the range.

I can calibrate your refractometer for free.
I just calibrated mine today (was reading 30ppt with 35 solution). Can the calibration fluid be poor? I figured you can't screw up the fluid, and it gets good reviews. My ppt is at 39 now so I have to lower it with the ATO. Hopefully it doesn't kill anything.

This is what I bought.

AccuBrate Refractometer Salinity... https://www.amazon.com/dp/B07HQSY9QG?ref=ppx_pop_mob_ap_share
 

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