The ColorFlex EZ Citrus measures Citrus Number, Citrus Redness and Citrus Yellowness. These indices were primarily intended to score orange juice concentrate, but in practice have also been used for grapefruit and lemon juices. In addition to the citrus values, the instrument can also measure in terms of the Hunter Lab scale as well as other widely used color scales. Thus the system can also be used to measure the reflected color of virtually any opaque or semi-opaque liquid.
The system comes complete with a sample tube holder, stand, clamp and a calibrated plastic O.J. standard. The instrument has a large, easy-to-read display and a sealed keypad. It requires very little bench space, and is very easy to use. In practice, the juice sample is poured into a test tube or capped tube. The tube is inserted into the instrument tube holder. By pressing one button on the instrument the measurement is made. CN (Citrus Number), CR (Citrus Redness) and CY (Citrus Yellowness) will simultaneously be displayed. The ColorFlex EZ Citrus can be connected to a printer if hard copy data is desired.
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: < 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
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
Citrus Color Model Only: Citrus Number, Citrus Redness, Citrus Yellowness Data Storage:
Languages: Chinese, English, French, German, Italian, Japanese, Spanish
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
Measures the reflected color of solids and liquids
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
The footswitch is used to initiate sample measurement without the use of hands.
Hard-Sided Carrying Case
Sample Cup Opaque Cover
Provides a light trap to exclude the interference of external light on the sample cup.
Ring and Disk Set
For use in the glass sample cup for sample presentation of liquids, powders, granules and pellets.
Glass Sample Cup
2.5 inch (64mm)
Optically clear glass cup for sample presentation of liquids, powders, granules and pellets.
Port Insert for Sample Cup
64 mm (2.5 in) Designed to hold and position the glass sample cup perfectly to accurately measure powders, granules, pellets, paste and liquids.
32 mm (1.25 in) Port Insert
25 mm (1 in) Port Insert
19 mm (0.75 in) Port Insert
13 mm (0.50 in) Port Insert
USB printer allows hard copy measurements to be printed. Requires a standard USB cable, sold separately. Uses Thermal Printer paper, sold separately.
L02-1014-440 Thermal Printer Paper (5 rolls per package)
Thermal printer paper for use with A13-1014-259 USB Printer.
USB Barcode Reader
Barcode Scanner scans product IDs directly into ColorFlex EZ. Automatically detected at USB port.
USB Flexible Keyboard
88 character keyboard allows user to enter IDs directly into ColorFlex EZ.