Refractometer calibration solution

[herman2016]

Hello

I am looking for refractometer calibration solution

 

[Dexter]

One can make the stuff. Just google

 

[herman2016]

thank you

 

[Dexter]

Years ago i just used normal ro water. 12 -13 years later still using this method. No fancy water ever used

 

[Pistolshrimp]

I also just true mine out with RO before every use

 

[noobsw]

Distilled water

 

[Mal_Dyl]

There is a forum from a few years ago that I read on here. Think it was 965g RO Water with 35g Idionised Salt. As reef salt is moist apparently, might be wrong. That should create a 35ppt solution but the error is 1ppt at max. It's not the best solution but atleast something. I assume an ICP test would be the best to know for sure.

EDIT: forgot to add (g) LOL

 

[Dexter]

Been to long on this forum..
Can thank me later...lol

DIY 35ppt Salinity Reference Solution

Some members might be familiar with RHF article on a home made reference solution recipe. In using it I found it to be quite unreliable in some aspects and do not recommend using the coke bottle method as the coke bottles we have are different to the ones we have in SA. But all the calculation...

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