Salinity Refractometer?

[Nugzz]

I bought a ATC Salinity Refractometer. is using Distilled Water an accurate way to calibrate?

 

[iFisch]

It's one way.

MINE turned out to be 100% calibrated using 1.000 pure RODI water. Not all users report the same thing.

The only way to be sure is to pick up some 53mS calibration solution.

 

[Nugzz]

The instructions only mention Distilled Water. So it is possible to be inaccurate using Distilled Water?

 

[iFisch]

<a href=showthread.php?s=&postid=15536230#post15536230 target=_blank>Originally posted</a> by Nugzz
The instructions only mention Distilled Water. So it is possible to be inaccurate using Distilled Water?

Yes.

http://www.reefaquariumguide.com/forum/aquacraft/103827-refractometer-calibration-solution.html

http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=18717

 

[luther1200]

You should use the Pinpoint solution. I don't know why the directions even say that. The Pinpoint solution is pretty cheap and you get a good amount. So you can calibrate it every month or so.

 

[kruse_alan]

+1 one bottle of solution will last a long time.