How to calibrate refractometer?

Sheldon337

New member
Anyone know? I have a feeling mine is a little off. I have nothing to compare it to, but the old fashioned float type hydrometer. There is small screw on the top of my refractometer but i am afraid to turn it.

Lee
 
Use straight RO/DI water...

put the pure water onto your refractometer, adjust the screw til it reads 0.000

that's how I did it.
 
The directions that came with my refractometer said to use distilled water. Is RO/DI water the same as distilled?
 
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