Hunter Associates Laboratory, Inc.

ColorFlex EZ Coffee Spectrophotometer

ColorFlex EZ Coffee Spectrophotometer

The easy-to-use ColorFlex EZ Coffee is specifically designed to accurately measure the color of ground roast coffee, including freeze-dried granules and instant coffee powders. This accuracy is achieved by using 45º/0º optical geometry, the only measurement technology proven to measure color the way the human eye sees it.

Easy-to-use. Compact. And Increased Performance. ColorFlex EZ Coffee Spectrophotometer gives you unsurpassed confidence and trust in your outcomes.

The easy-to-use ColorFlex EZ Coffee is specifically built to meet and exceed your needs in measuring the color of roasted coffee grounds. It makes it easy to define the degree of roasting. Coffee color scales provided in firmware include: HunterLab Coffee Color Index (HCCI), SCAA Number & SCAA Roast Classification.

The ColorFlex EZ Coffee provides the measurement data needed to ensure consistent batch-to-batch production quality. Coffee color scales provided in firmware include: HunterLab Coffee Color Index (HCCI), SCAA Number & SCAA Roast Classification. In addition to its specialized coffee measuring ability, the ColorFlex EZ Coffee can also measure the reflected color of a wide range of non-coffee samples - liquids, semi-solids, powders, and solids using standard Hunter L,a,b color and CIE L*a*b* colorimetric and spectral data indices. Every ColorFlex EZ Coffee instrument is ready to immediately start measuring coffee color values, and includes: ColorFlex EZ Coffee instrument, Complete set of calibration & diagnostic tiles, Coffee tile for performance qualification, 1 sleeve of plastic coffee sample dishes and backed up by the finest customer support in the industry.

• Measures the reflected color of roasted coffee grounds, including freeze-dried, as well as instant powders
• Product-standard storage with Pass/Fail tolerances
• Displays Color Data, Color Plot, Spectral Data and Spectral Plots
• 45°/0° measurement geometry
• Requires very little bench space
• Can be connected to a printer or a PC
• Compatible with PC based EasyMatch QC quality control software

Product Specifications

Measurement

Measurement Principle: Port up or Port forward dual-beam spectrophotometer

Geometry: Directional annular 45° illumination / 0° viewing

Spectrophotometer: Sealed optics; 256-element diode array and a high resolution concave holographic grating

Port Diameter/View Diameter: 31.8 mm (1.25 in) illuminated/ 25.4 mm (1 in) measured

Specular Component: Excluded

Spectral Range: 400 nm - 700 nm

Spectral Resolution:

Effective Bandwidth: 10 nm equivalent triangular

Reporting Interval: 10 nm

Photometric Range: 0 to 150 %

Light Source: Pulsed Xenon Lamp

Flashes per Measurement: 1 flash

Lamp Life: > 1 million flashes

Measurement Time:

Minimum Interval Between Measurements: 3 seconds

Standards Conformance: CIE 15:2004, ISO 7724/1, ASTM E1164, DIN 5033, Teil 7 and JIS Z 8722 Condition C

Standards Traceability: Instrument standard assignment in accordance with National Institute of Standards and Technology (NIST) following practices described in CIE Publication 44 and ASTM E259

Performance

Inter-Instrument Agreement:

• ∆E*

  Colorimetric Repeatability: ∆E*

  Firmware

  Data Views: Coffee Roast, Color Data, Color Difference Data, Tristimulus Color Plot, Spectral Data, Spectral Difference Data, Spectral Plot, Spectral Difference Plot

  USB Flash Drive Features: Backup of Setups and Data, Setup Transfer to Multiple Units, Data Export to Excel

  Other Features: Pass/Fail, Average Multiple Readings, Search for Closest Standard

  Illuminants: A, C, D50, D55, D65, D75, F2, F7, F11

  Observers: 2° and 10°

  Color Scales: CIE L*a*b*, Hunter Lab, CIE L*C*h, CIE Yxy, CIE XYZ

  Color Difference Scales: ∆L*a*b*, ∆Lab, ∆L*C*H, ∆L*C*h, ∆Yxy, ∆XYZ

  Color Difference Indices: ∆E*, ∆E, ∆C*, ∆C and ∆Ecmc

  Indices and Metrics: E313 Whiteness and Tint (C/2° or D65/10°), E313 Yellowness (C/2° or D65/10°), D1925 Yellowness (C/2°), Y Brightness, Z%, 457 nm Brightness, Opacity, Color Strength (Average and Single Wavelength), Gray Change, Gray Stain, Metamerism Index, Shade Number

  Ground Coffee Color Model Only: Tomato Color Scores: HCCI (HunterLab Coffee Color Index values), SCAA Number, SCAA Roast Classification, colorimetric and spectral data

  Languages: Chinese, English, French, German, Italian, Japanese, Spanish

  Physical/Electrical

  Dimensions:

  Display: 7.1 cm x 5.4 cm (2.8 in. x 2.1 in.) backlit color LCD

  Interface: 3 USB 2.0 ports

  Power: 100 to 240 VAC 47 to 63 Hz

  Operating Environment: 10° to 40°C (50° to 104° F), 10 % to 90 % RH, noncondensing

  Storage Environment: -20° to 65°C (-5° to 150° F), 10 % to 90 % RH, noncondensing

  Standard Accessories:

  • ∆E*
    • Height: 16 cm (6.3 in.)
    • Width: 13 cm (5.1 in.)
    • Depth: 36 cm (14.2 in.)
    • Weight: 4.5 kg (9.9 lbs)
    • Calibrated instrument white tile
    • Certificate of traceability
    • Black glass
    • Green diagnostic tile
    • Universal AC adaptor
    • Computer interface cable
    • USB flash drive
    • ColorFlex EZ User guide