Colorimetric Light Box Tester

Meet the standard:

ISO 3664 ISO 3668

ASTM D1729 AATCC EP1 CIE

Product Introduction:

Visual color assessment is a fundamental step in quality control and product development across many industries, including textiles, paints, plastics, printing, packaging, and automotive. Natural daylight varies significantly with time of day, weather, and location, while standard artificial lighting also differs in spectral composition. A Colorimetric Light Box eliminates this variability by providing controlled and standardized light sources that accurately simulate specific illuminants defined by international standards, such as:

D65: Average North Sky Daylight (common standard for many industries).

CWF (Cool White Fluorescent): Typical office or retail lighting.

TL84 or U30: Fluorescent light sources common in European and US retail environments, respectively.

A: Incandescent Tungsten Filament lighting (similar to home lighting).

UV (Ultraviolet): Used to detect the presence and effect of optical brightening agents.

The instrument is used in laboratories and production areas for:

Visual assessment and comparison of colors of samples against standards.

Identifying metamerism by viewing samples under different standard illuminants.

Quality control to ensure consistency in product color from batch to batch or between different components.

Setting and approving color standards between suppliers and customers.

Evaluating colorfastness tests under standardized viewing conditions.

Research and development related to color formulation and material appearance.

Product Advantages:

Provides a controlled and standardized lighting environment for reliable visual color evaluation.

Eliminates variability in color judgment caused by uncontrolled or changing ambient light.

Essential for consistent color matching and quality control across different locations and observers.

Facilitates the detection of metamerism, which is crucial for product color harmony.

Helps ensure compliance with international standards for visual color assessment.

Useful across a wide range of industries dealing with color.

Allows for comparison of color appearance under different simulated real-world lighting conditions.

Product Features:

Enclosed cabinet with an interior surface painted in a neutral gray color (e.g., Munsell N5 or N7).

Multiple distinct light sources installed, each designed to simulate a specific standard illuminant (e.g., D65. CWF, TL84. A, UV).

Individual switches or buttons to easily select and toggle between the different standard light sources.

Hour meter associated with each lamp type to track its usage and indicate when replacement is needed, as lamp spectral characteristics change over time.

Digital display showing the currently selected light source and the usage hours of that lamp.

Sturdy and durable construction, typically designed for benchtop use.

Compliant with the spectral requirements for standard illuminants as defined by relevant standards (ISO, ASTM, CIE).