Ferco Color

QUALITY POLICY
in order to maintain the high quality standard of today's marketplace. all color matches and production orders are subject to the following criteria:
+ Spectrophotometer readings on Data Color Chroma Calc® system. This newest system is capable of providing color matches within minutes, provide automated corrections to the original standard and retain a history of production orders to ensure quality consistency from lot to lot.
+ All orders are accompanied with spectrophotometer printout. Quality Control chips and Certificate of Analysis.

TYPICAL TESTING METHODS PRIOR TO SHIPPING

Dispersion
Pellet Continuity
Color (Visual and instrumental)

MOST MANUFACTURERS WILL RELEASE ON A VISUAL Q.C.

Click here for more information on COLOR MATCHING/EVALUATION

SPECTROPHOTOMETERS

HOW DO THEY WORK?
If we separate light into its different wavelengths, we create a spectrum. We can then create the different
colors by mixing the separated wavelengths of light in varying intensities. Spectrophotometers measure light
reflected from an object at each wavelength. This spectral data can be displayed numerically, or in graph form. Spectrophotometers are ideal for measuring metamerism, the phenomenon in which two colors look the same under one light source, but different in another.

MACHINE SET-UP
The most common used system is the CIElab system. CIE stands for "Commission Internationale de l'eclaorage" This system is read as such:
L: Lightness, A: Red/Green. B: Yellow Blue. DE: Total color difference.
These values are then calculated to give the pass/fail reading according to the tolerances set by the user.

HOW TO READ YOUR RESULTS
The human eye sees between 400 and -700 nanometers. This is the wavelength for visual color. These machines arc set up to help you assess these wavelengths in more understandable terms.

If a sample numerical reading is as follows:
L: -100
A: .25
B: -.65
DE: 1.25

Then the sample is:
Too Dark (- on L)
Too Red (no - on A)
Too Blue (- on B)
DE: Total Color Difference

If the sample numeric readings were reversed, the sample would be:
Too Light (no - on L)
Too Green (- on A)
Too Yellow (no - on B)
DE: Total Color Difference

WHAT IS A COLOR CURVE?
Each color formulation has its own unique color curve; its own fingerprint if you will. This curve will tell the user if the combination of pigments used has been changed; this will give a different color curve. Remember metamerism? The color may look the same under one particular light source, but looks different under another. It is important to keep this in mind when using a spectrophotometer.

THIS MACHINE CAN NEVER REPLACE VISUAL ASSESSMENT!