I posted this in Equipment/Hardware and no replies yet, thought I would try here.
I have a hand held ATC refractometer and was wondering if someone may know the best place to get calibration fluid for the instrument.
The scale reads from 12%-27% so I am not able to use distilled water for calibration.
I've seen ads on E-Bay from Instrument Supply Distributors for small vials of fluid but they seem a little pricey .... wonder if there is something else that can be used for accurate calibration checks in the range above.
To everything there is a season....