calibrated working good . in Greece in 31 days
I ordered honey refractometer and operation manual that is in the package is not for it - it says to calibrate it with distilled water. I did that (of course without thinking) and obviously mixed up the refractometer. I had to buy calibration oil to calibrate it again. When I contacted seller about calibration, they said it doesn't need to be calibrated, because it already is. It would be nice if it would be in operation manual.