[Jay03GT]

I bought a refractometer for measuring salinity, and bought a bottle of the calibrating fluid.
When I got the fluid there was just a bottle, all the numbers are jumbled up on the front, and I have no way of knowing what level it is supposed to be. I'd like to verify that the refractometer is reading correct, it reads 1.000 with RO/DI water on it. Anyone know what the fluid is supposed to read? Thanks.

[Sage Hen]

The instructions that came with my refractometer say that for calibrating it to put 2-3 drops of distilled water on the glass then adjust it to "0". You don't need any kind of special fluid for calibrating that I know of, just distilled water. You can't calibrate it with ro/di water. If anyone else out there knows more, please add in or correct me!

[Tonz of fun]

lol they gave you a bottle? Sweet. Ya to calibrate you put plain jane RO water on it and make sure it reads 1.000. You dont need special fluid.

[Krazy]

Just check it with some fresh water and see if it reads 0 / 1.000 , if it does then your all set to go, if not adjust to 0 / 1.000 and then you'll be all set.

[Jay03GT]

It was a $40 refractometer, so I felt obligated to buy the $3 bottle of calibrating fluid. I think I'll take it down to the LFS and double check it against his just to make sure.

Thanks gang, ya'll are awesome!