how to calibrate hanna salinity tester

[Gtinnel]

MA887 is the one commonly used in the hobby. It will be listed as a seawater refractometer.

 

[fcmatt]

What is wrong with a refractometer and 2 or 3 diff brands of cal fluid? So much faster then any electric gadget.

Things are dead simple, reliable, and just work.

 

[Miami Reef]

What is wrong with a refractometer and 2 or 3 diff brands of cal fluid? So much faster then any electric gadget.

Things are dead simple, reliable, and just work.

I much rather prefer the digital. Finding the perfect overhead light, making sure no air bubbles get into the sample, squinting eye pain, and straining to read which number that fuzzy blue line hits were the reasons I switched to the Milwaukee.

 

[mdb_talon]

What is wrong with a refractometer and 2 or 3 diff brands of cal fluid? So much faster then any electric gadget.

Things are dead simple, reliable, and just work.

Haha thats what i was wondering!

 

[homer1475]

You can keep every refractometer ever made, and every bottle of calibration fluid ever made. Nearly every one of them is off. And like posted above, let me get in the correct light, squint with my left eye, and try to guess where the edge of some fuzzy line is.

@Randy Holmes-Farley has a DIY calibration fluid that simply uses table salt.

OK we all like hanna meters for the digital readout, yet when using a digital refractometer, everyone gets bent out of shape over it. It's quite simple ease of use. Same reason we all like the hanna meters over titration tests.

 

[mdb_talon]

OK we all like hanna meters for the digital readout, yet when using a digital refractometer, everyone gets bent out of shape over it. It's quite simple ease of use. Same reason we all like the hanna meters over titration tests.

Lol dude lighten up use whatever salinity checker you want i dont think any of us are bent out of shape about.

FYI though many of us prefer titration tests to hanna and their crappy reagents.

 

[GHOSTLY]

*sorry in advance to GHOSTLY since this has nothing to do with original question...

Which Milwaukee model# do people (that recommended) use? There's MANY, from what I see. (Was planning on buying the Hanna but now curious)

I'm not sure but ill bump it for you! I got my answer

 

[GHOSTLY]

Lol dude lighten up use whatever salinity checker you want i dont think any of us are bent out of shape about.

FYI though many of us prefer titration tests to hanna and their crappy reagents.

What's that?

 

[Gtinnel]

What's that?

Which part are you asking about, titration tests? If that's the one your asking what it is then it's the test type where you put drops in looking for a color change. Like all of the alkalinity, calcium, and magnesium manual tests.

 

[ReefRondo]

I purchased that Hannah checker and it’s highly inaccurate. A lot of members agree with me on this.

I listened to a member on here and got the Milwaukee and I’m so glad I did! The hannah checker is getting returned.

My 2¢

I had the complete opposite experience and have now moved to the hanna checker. I have two of the Milwaukee ones and both after a year or so stopped being much use.

 

[GHOSTLY]

Which part are you asking about, titration tests? If that's the one your asking what it is then it's the test type where you put drops in looking for a color change. Like all of the alkalinity, calcium, and magnesium manual tests.

Is there anything more special about it?

 

[mdb_talon]

Is there anything more special about it?

Nothing special no.

 

[Gtinnel]

Is there anything more special about it?

Agreed no it's just the standard test type for manual tests for alk, cal, and magnesium. You've likely performed titration tests and just didn't know that what they were called

 

[gbroadbridge]

The Milwaukee is extremely accurate. I found the problem is that their calibration fluid they sent is inaccurate.

I have both the tropic Marin and the Milwaukee and they both tested the same.

How did you recalibrate? You Can?

 

[GHOSTLY]

Agreed no it's just the standard test type for manual tests for alk, cal, and magnesium. You've likely performed titration tests and just didn't know that what they were called

Fully correct

 

[gbroadbridge]

A hanna with a home made calibration fluid per Dr Randy is the bees knees.

A milwalkee digital refrac is also just as good, when partnered with a Dr Randy calibration fluid.

It's the magician, not the wand,

 

[Gtinnel]

A hanna with a home made calibration fluid per Dr Randy is the bees knees.

A milwalkee digital refrac is also just as good, when partnered with a Dr Randy calibration fluid.

It's the magician, not the wand,

Couldn't agree more. What a creative analogy

 

[mdb_talon]

A hanna with a home made calibration fluid per Dr Randy is the bees knees.

A milwalkee digital refrac is also just as good, when partnered with a Dr Randy calibration fluid.

It's the magician, not the wand,

What model of milwaukee are you using anything other than rodi water to calibrate?. I dont know of one that uses a standard 35 solution(or anything other than 0)?

 

[Gtinnel]

What model of milwaukee are you using anything other than rodi water to calibrate?. I dont know of one that uses a standard 35 solution(or anything other than 0)?

As far as I know you're right and they all calibrate to 0. I use Randy's recipe as a reference solution on mine though.

 

[Someshmuk]

After owning both i went back to a refractometer i can calibrate to 35ppt of a known salinity fluid. Hanna checker lasted me about a year before the drift started becoming less than a month per calibration. (pretty sure it was because for a while i didn't know to clean the probe with rodi). My Milwaukee that i have always reads 1 point higher then the two calibration solutions i've used. It ended up with me revalidating my salinity using a refractometer because i couldn't trust the equipment so i just skipped the steps and just use the refractometer and validate the calibration every few months.