What’s really my salinity lol

[Fishingandreefing]

Two brand new packs of Hanna solution (exp 2025) were tested at 1.019 (consistently) by the Milwaukee (supposedly .001 high) and the same solution tested by Hanna at 1.026. Then I checked the tank water by Hanna at 1.025 and 1.027 by the Milwaukee? All tests were conducted at least twice to verified ‍

And lastly:

I tested Hanna calibration fluid by Pinpoint at about 1.025.

I tested pinpoint solution fluid by Milwaukee at 1.028.

 

[mtraylor]

Get a refractometer. Much easier to work with and you can use it as a base to calibrate your other equipment too.

 

[Tcook]

I got tired of it. I now use my Tropic Marin hydrometer and use it to calibrate a simple swing arm.

 

[KStatefan]

The Hanna calibration solution is not made for refractmeters

 

[mtraylor]

Be careful with swing arms they can get you in trouble. Been there done that. Keep it clean

 

[Gtinnel]

The Hanna calibration solution is not made for refractmeters

There are different solutions for refractometers and conductivity meters.

 

[monkeyCmonkeyDo]

+1 find a solid variable and use this as a measuring point. Compare with others readings.
All I can tell you is reefs are 1.025-1.027
Fish only 1.023-1.025
I would stick in these ball parks.
D

 

[Fishingandreefing]

Get a refractometer. Much easier to work with and you can use it as a base to calibrate your other equipment too.

Had one and was way off. That’s why I went with digital routes.

 

[Fishingandreefing]

The Hanna calibration solution is not made for refractmeters

Maybe that’s why

 

[Fishingandreefing]

There are different solutions for refractometers and conductivity meters.

So based on what I got is pretty much good?

 

[gbroadbridge]

Two brand new packs of Hanna solution (exp 2025) were tested at 1.019 (consistently) by the Milwaukee (supposedly .001 high) and the same solution tested by Hanna at 1.026. Then I checked the tank water by Hanna at 1.025 and 1.027 by the Milwaukee? All tests were conducted at least twice to verified ‍

And lastly:

I tested Hanna calibration fluid by Pinpoint at about 1.025.

I tested pinpoint solution fluid by Milwaukee at 1.028.

You cant use the same calibration fluid for refracs and EC probes

One is a conductivity test, the other is a diffraction test.

 

[Randy Holmes-Farley Verified Community Expert]

Hard to follow what all you did, but if you calibrate the Hanna with its fluid and the Milwaukee with RO/di and read tank water with both, are they close?

FWIW, the difference in specific gravity between 1.025 and 1.027 is within the specifications of these devices

 

[mtraylor]

Refractomerer is easy to calibrate btw

 

[gbroadbridge]

Refractomerer is easy to calibrate btw

They're all easy to calibrate. Pick one and stick to it.

 

[Tcook]

Be careful with swing arms they can get you in trouble. Been there done that. Keep it clean

I rinse it every time and knock the bubbles off.

 

[Jeffcb]

Probably about right.

 

[Sshannon]

This just popped up on my youtube feed.

 

[mtraylor]

They're all easy to calibrate. Pick one and stick to it

Im confused. Why do i need to pick anything?

 

[mrpontiac80]

I’ll throw my two cents in. I have a hand held Hanna salinity checker and after calibration I kept my tank at 1.025. My buddy has a Milwaukee salinity machine and he keeps his at 1.025 also. After using both checkers on each tank the Hanna reads lower than his Milwaukee. Keep in mind that both have a tolerance + and - of X amount.
having said that, we both bought a tropic Marin glass hydrometer because they need no calibration. I’m my case, I took a 5 gallon bucket and used 3 temp probes for an average. One of those temp probes used was the Hannah checker. After my fresh saltwater hit 77 degrees I took a reading and my hanna when compared to the glass hydrometer was reading low. So now I mix my water so that the hanna checker reads 1.024 and if I ever compare it to the tropic Marin hydrometer, I am exactly where I want to be at 1.025.
I’m pretty sure my friend was showing his Milwaukee to read slightly high compared to his hydrometer.

I think the post above saying just pick one and stick to it is referring to a testing method. Stability is more important than anything else.

 

[mtraylor]

Ah I see. Well hopefully you guys get everything sorted.