This portable honey color analyzer measures the percent light transmittance of honey compared to analytical reagent grad glycerol (calibration fluid.) The transmittance value allows identification of the honey Pfund grade. The instrument directly displays the measurement result expressed in mm Pfund. Features an auto shut-off feature that will turn the instrument off after 10 minutes of non-use. This unit is rugged and simple to use with easily identifiable readings. Measures a range 0 - 150 mm Pfund. Comes complete with 82 matched square cuvets, glycerol, syringes, batteries and instructions.