ColorFlex EZ

ColorFlex EZ offers the advantage of 45º/0º design ensuring that you not only get your colors right – but perfect every time. It measures your sample the way the human eye does. It lets you see your colors exactly the way your customers do, not just in the lab but in the real world.

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

Offers sampling versatility to measure everything from opaque solids, liquids, powders, granules and pellets to translucent solids and liquids. It comes with expanded sample storage for 250 setups, product standards and tolerances and up to 2000 sample measurements. ColorFlex EZ’s smaller size requires very little benchtop space and it’s one-touch operation makes it easy to operate for all of your color measurement challenges.

ColorFlex EZ is also offered in custom models for these solution applications:

ColorFlex EZ Citrus is specifically designed to measure the color of fresh and concentrated orange, grapefruit, and lemon juice. Citrus color scales provided in firmware include: Citrus Number, Citrus Redness & Citrus Yellowness.

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.

ColorFlex EZ Tomato is specifically designed to measure tomato color in its every processed form – paste/purée, sauce, catsup, juice, as well as fresh tomatoes. Tomato color scales provided in firmware include: Tomato Paste Score (TPS), Tomato Sauce, Score (TSS), Tomato Catsup Score (TCS), Tomato Juice Score (TJS), a/b ratio, Fresh Tomato Color Index (FTCI) & Lycopene index.

Explore all the additional features and benefits below.

Product Specifications

Measurement Principle: Port up or Port forward dual-beam benchtop 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: < 3 nm

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: < 1 second from button push to measurement 2 seconds from button push to data display

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

Inter-Instrument Agreement:

∆E*< 0.15 CIE L*a*b* (Avg) on BCRA II Tile Set
∆E*< 0.25 CIE L*a*b* (Max) on BCRA II Tile Set
Colorimetric Repeatability: ∆E*< 0.05 CIE L*a*b* on white tile (20 Readings)

Data Views: 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

Tomato Color Model Only: Tomato Color Scores:

  • TPS – Tomato Paste Score
  • TSS – Tomato Sauce Score
  • TCS – Tomato Catsup Score
  • TJS – Tomato Juice Score
  • Tomato a/b Ratio
  • Lycopene Index

Citrus Color Model Only: Citrus Number, Citrus Redness, Citrus Yellowness Data Storage:

  • As Standard – 250 spectral or tristimulus with Pass/Fail tolerances as Working, Physical, Numeric and Hitch
  • As Sample – 2000 spectral

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


  • 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)

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:

  • 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