Hanna salinity test vs refractometer

[Savo]

I’m starting up a new tank and I bought a Hanna Salinity tester. I didn’t trust the readings so I compared it to my refractometer. They where completely different. One was reading 32ppt and the other at 40ppt. I took a sample to my local fish store and there reading was spot on with one of mine. Which one would you guess was right?

 

[Nick Steele]

I voted Hannah but honestly it’s probably the one that’s newer or the one that was calibrated last.

 

[Just John]

Refractometer. It's simpler technology. More reliable. I would bet money on it.

 

[Savo]

Both where calibrated the same day I took the reading

 

[Just John]

By the way, about the accuracy those cheap Amazon refractometers. I ended up with 2 of them and a friend bought a $120 refractometer. We tested them and they were all spot on with each other.

 

[Savo]

By the way, about the accuracy those cheap Amazon refractometers. I ended up with 2 of them and a friend bought a $120 refractometer. We tested them and they were all spot on with each other.

The refractometer I bought was BRS led version. The calibration solution I use was from Amazon

 

[BroccoliFarmer]

Refractometer is the winner.

 

[Nick Steele]

When do we find out? Lol

 

[Just John]

 

[Savo]

When do we find out? Lol

The Hanna Salinity tester was the winner. I don’t know if I have a bad bottle of calibration for the refractometer. My local fish store told me to calibrate it with distilled water and I will let you know what it read.

I was shocked I didn’t think the refractometer would be wrong.

 

[Just John]

And I trusted you