Looking for refractometer calibration solution

[ssericz]

Looking where to pick a bottle up that has it in stock I looked online but most are 3-7 days away with shipping I'm trying to get water mixed up for the new tank so I can do the swap wed

 

[All Delight]

I use rodi water

 

[ssericz]

Ur salinity may not be what u believe then haha

 

[805reef]

Ur salinity may not be what u believe then haha

Why is that?

 

[lowbudget]

I use rodi water

same here

 

[TH64]

Why is that?

+1 I calibrate mine every week with the calibration fluid. It needs to be adjusted every once in a while and I would definitely recommend it for $6.

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[saybng]

I also use Rodi and also use solution, not much of a difference here so I quit buying the solution.

 

[Jerry Williams]

Rodi is fine and calibration fluid is more accurate since RODI is @ 1.000 whereas the calibration fluid is @ 35 ppt or 1.025. Cost per test, RODI is much cheaper. I've had my ATC (cheapo) salinity tester for almost 3 years. I used RODI to set i t up and after 6 months tested again and it was accurate. A few months back I did a calibration with refractometer cal. fluid and RODI both results were exactly on target.

I use rodi water

 

[805reef]

Two little fishes AccuraSea Seawater Reference Solution uses rodi to adjust it to 35ppt.

"It’s pure natural sea water micron filtered and UV sterilized then adjusted with reverse osmosis water to the standard S = 35"

+1 for using rodi

 

[All Delight]

I have the fluid that comes with my d&d refractometer. When I calibrate with the calibration fluid and rodi it's the same. Maybe the one they give for free isn't any good? Either way, been doing it that way for 12 years now.

 

[bvysochin]

Age in long beach has it at the register.

I just use rodi as well.

 

[theMerchant]

Saltwateraquarium.com has it. I used it.

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[solitude127]

For those that use calibration fluid, how do you actually know that it is what it say it is?

 

[All Delight]

For those that use calibration fluid, how do you actually know that it is what it say it is?

LOL they fill it with rodi water. Imagine that!!