Practical Spectrophotometric Color Measurement Setup in Textile Dyeing Operations
Standardizing instrument geometry, sample conditioning, and CIEDE2000 mathematical parameters establishes repeatable spectrophotometric shade clearance in bulk dyeing.
Illuminant TL84
Light Standard
A standardized light source profile represents the triphosphor fluorescent lighting commonly used in European retail and office environments. Garment brands specify illuminant TL84 as a primary or secondary source for evaluating color consistency in retail stores. This profile ensures that garments matched under office lights do not look mismatched when displayed to shoppers.
Spectral Distribution
The profile of this source is characterized by narrow emission peaks in the green, blue, and red regions of the spectrum. It has a correlated color temperature of approximately four thousand Kelvin, which creates a slightly warm white appearance. When dye recipes are formulated, colorists check the fabric under this light to ensure it does not undergo metamerism.
Metamerism occurs when two fabric panels match under one light but diverge under another. By comparing spectrophotometer readings under multiple light profiles, the software detects these potential issues before bulk production starts.
Retail Simulation
Garments hung together on a sales rack must be evaluated under this specific lighting to prevent color discrepancies. If a polyester-cotton blend jacket is matched only under daylight, its components may appear different under fluorescent store light.
Alternative Source
While this profile remains the standard for European retail, American retailers often prefer other fluorescent profiles or newer light emitting diode standards. Each brand maintains its own requirements depending on its target market.