Calibration standard handheld refractometers

Calibration standard for the handheld refractometers models: HRB82-T, HRB92-T, HRH30-T.

N-FK5 glass; fluorine-containing crown glass. The nD value is 1.4875 ±0.0002 or 78.8 %Brix ±0.2 %Brix.

• 5 ml cinnamon oil included