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HI96785 Honey Color Portable Photometer, Pfund USDA Grader

Hanna Instruments

  • $ 40300

Item Description: HI96785 Honey Color Portable Photometer

The HI96785 Honey Color Portable Photometer is used to measure the transmittance of light in order to determine the color of honey. The HI96785 combines accuracy and ease of use in an ergonomic, portable design that ends the days of judging color 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.

CAL Check Validation and Calibration

Built-in Timer

Automatic Shut Off


The HI96785 portable analyzer is for the determination of honey color. 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 path 10 mm path length. 

Features at-a-glance

CAL Check - Allows for performance verification and calibration of the meter using NIST traceable standards.

GLP - Review of the last calibration date.

Auto-shut off - 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.

Built-in timer - Display of time remaining before a measurement is taken. Ensures that all readings are taken at the appropriate reaction intervals for the test being performed.

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.

Units of measure - Appropriate unit of measure is displayed along with reading.

Significance of Use

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

The natural color of honey presents many tonalities: from straw yellow to amber, from dark amber to almost black with a hint of red. The color 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 color 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 HI96785 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.

The table below reports the USDA classification for honey samples and the related mm Pfund values.

USDA Color Standards Designations

Color Range Pfund Scales (mm)

Water White

8 or less

Extra White

Over 8 to 17 (including)


Over 17 to 34 (including)

Extra Light Amber

Over 34 to 50 (including)

Light Amber

Over 50 to 85 (including)


Over 85 to 114 (including)

Dark Amber

Over 114


Range 0 to 150 mm Pfund
Resolution 1 mm Pfund
Accuracy @ 25°C (77°F) ±2 mm Pfund @ 80 mm Pfund
Light Source tungsten lamp
Light Detector silicon photocell with narrow band interference filter @ 420 nm and 525 nm
Method direct measure
Auto-off after ten minutes of non-use in measurement mode  after one hour of non-use in calibration mode; with last reading reminder
Environment 0 to 50°C (32 to 122°F); RH max 95% non-condensing
Battery Type 9V battery
Dimensions 193 x 104 x 69 mm (7.6 x 4.1 x 2.7”)
Weight 360g (12.7oz.)
Ordering Information HI96785 is supplied with sample cuvettes (5), 9V battery, light shield cap, cuvette wiping cloth, rigid carrying case, instrument quality certificate and instruction manual.


National Industrial Supply  

30777 Rancho California #891420
Temecula, CA 92589, USA
Sales: 951.308.9269
Fax: 310.833.7306 

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