Refractometer (1 Viewer)

[SUP]

Lost my old faithful floating glass hydrometer. Do not see any of the glass type in my area.

How difficult are the refractometer style salinity checkers to calibrate?


Thanks,


SUP

 

[Scarbl]

Easy. Get one.

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[Clownfish Chris]

^^^^^^
This.

 

[steved350]

Refractometer is so easy to use. Takes no time to calibrate.


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[webster1234]

And more accurate too

 

[emixa]

What all the guys said. let me know if you need one. i have a brand new one in the box, never been opened i can sell you. damn spontaneous buyer in me....

Lost my old faithful floating glass hydrometer. Do not see any of the glass type in my area.

How difficult are the refractometer style salinity checkers to calibrate?


Thanks,


SUP

 

[gregg]

Simple simon!

 

[Reefahholic]

What's the most accurate ones? I have two and don't feel either one is very accurate, but they get the job done.

 

[RR-MAN]

What's the most accurate ones? I have two and don't feel either one is very accurate, but they get the job done.

I have the cheap marine depot version which I think was around $50 and works great for the last 5 yrs.

I have two different calibration fluids to make sure it's calibrated accurately. I noticed I was off a couple of points when calibrated with the ro/di water.

 

[reeftopia]

check out ebay

 

[Reefahholic]

I have a Redsea and a digital Milwaukee.

The Milwaukee is what I like to use on a daily basis because it's easy. It's accurate to +2/-2. I wish it was more accurate. Once it's zeroed in, I find it stays very accurate and doesn't need to be calibrated that much.

The Redsea is supposed to be +1/-1.

I cross check them both with 3 different calibration fluids and also pure RO/DI water straight from the tubing.

 

[Reefahholic]

Does anybody know if the Hanna is better than the Milwaukee? The look exactly the same. Seems somebody copied the other.

I want it if it's more accurate.

Digital Refractometer for Seawater Analysis - HI96822 - Hanna Instruments

 

[RR-MAN]

Nothing beats a salinity probe [emoji23][emoji23][emoji23]


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[Reefahholic]

Nothing beats a salinity probe [emoji23][emoji23][emoji23]


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I should probably get one for my Apex. How much are they? Are they accurate?

 

[Bigfishy]

You can get a floating glass hydrometer at a brew store. Self Delfacos is off Stelalink here in Houston .


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[Reefahholic]

How accurate are those?

 

[FarmerTy]

I'm curious about the Hanna version as well but would assume it is exactly the same as my Milwaukee.

The Apex salinity probes are junk to me. From the reports I hear from others, I never bothered to use them.

 

[steved350]

As far as I'm concerned the apex salinity probes are junk. Mine was off from day one and never has come down to where it should be.


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[Bigfishy]

As far as I'm concerned the apex salinity probes are junk. Mine was off from day one and never has come down to where it should be.


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Did you buy the calibration fluid and calibrate?


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[steved350]

Sure did. My Apex came with the calibration fluid for it. Followed several different videos on how to do it and still it settles out at about 35.6 when the refractometer that's been calibrated also reads 33. That's too big of a difference for me to ever rely on what it says.


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