Traditionally Pfund color units have been derived using subjective visual assessment in a Pfund Honey Colorimeter or against glass standards. This can lead to differences in reported values between users. A more objective approach is to use an instrumental method based on a photometric measurement.
The Lovibond® Honey ColorPod combines simplicity with accuracy for the measurement of color in the honey industry. The instrument is compact and portable allowing for measurements to be made in-situ, rather than having to carry samples back to the laboratory.
The measurement is performed using two single wavelength LEDs at right angles to each other. Light at 430 nm and 530 nm is passed through the sample being analyzed. The transmitted light is then related to the Pfund color scale or to the seven USDA Honey classifications. The LED will last the lifetime of the instrument. Samples are measured in 10 mm path length plastic cuvettes, with four clear sides, that are inserted into the spill proof sample chamber. The measurements take only three seconds to perform, with results output in mm Pfund honey. |