Caution for anyone using a refractometer

[Reefer Rob]

Originally Posted by Canadian

There's quite a large difference in the reading if you don't bring your sample up to (or down to) 25C - the temperature at which your calibration solution should be in order to get a reading of 35ppt. So bring the temperature of the solution up to 25C by placing the bottle in some hot water and then letting it come down while resting at room temperature.

Do you warm your refractometer to 25C?