Hanna Instruments HI-96785 Honey Colour Grade Portable Photometer

The HI-96785 Honey Colour Portable Photometer is used to measure the wavelengths of light passed through the honey in order to determine the colour value expressed in millimeters.

The HI-96785 combines accuracy and ease of use in an ergonomic, portable design that ends the days of judging colour by eye. Hanna's portable photometers feature an advanced optical system; the combination of a special tungsten lamp, a narrow band interference filter, and silicon photodetector ensure accurate photometric readings every time.

Portable honey colour grade analyser

The HI-96785 portable analyser is for the determination of honey colour. Hanna's portable photometers feature an advanced optical system; the combination of a special tungsten lamp, a narrow band interference filter, and silicon photodetector ensure accurate photometric readings every time. The exclusive cuvette locking system ensures that the cuvette is inserted into the measurement cell in the same position every time to maintain a consistent 10mm path length.

• Calibrates 100% transmittance with a glycerol standard
• Auto-shut off
• Digital colour analysis of honey from 0-150 mm Pfund

Key features

• Automatic shut off after 10 minutes of non-use when the meter is in measurement mode. Prevents wastage of batteries in the event the meter is accidentally left on.
• Battery status indicator - Indicates the amount of battery life left.
• Error messages - Messages on display alerting to problems including no cap, high zero, and standard too low.
• Cooling lamp indicator - To maintain the desirable wavelength to be used for absorbance, it is necessary to ensure components are not overheated from the heat generated by the tungsten lamp. Each photometer is designed to allow a minimal amount of time for components to cool. The cooling lamp indicator is displayed prior to a reading being taken.

Significance of Use

The primary characteristic for commercial honey classification is colour. Colour classes are expressed in millimeters (mm) Pfund as compared to an analytical grade glycerol standard reference.

The natural colour of honey comes in many tones: from straw yellow to amber, from dark amber to almost black with a hint of red. The colour of untreated honey originates from the botanical varieties used by the bees; for this reason, its coloration allows one to commercially identify the original floral type.

The colour of honey tends to darken with age or change according to the method of conservation or production used by beekeepers. These practices can include the use of old beehives, contact with metals, the temperature of conservation, and exposure to light.

The HI-96785 uses direct measurement to determine honey coloration ranging from 0 to 150 mm Pfund. This photometer has a tungsten lamp with a narrow band interference filter to isolate the 420 nm and 525 nm wavelength. All samples are measured in a square cuvette having a 10 mm light path and are compared to a glycerol standard. The percent light transmittance readings are directly displayed as mm Pfund. With its advanced optical system, the highly precise meter eliminates subjectivity to provide readings that are accurate and repeatable.

Specifications

Downloads

• HI-96785 Honey Colour Grade Photometer (PDF)