Color Meters

Color meters are precision instruments used to quantify and analyze color in an objective, repeatable manner. They are essential in industries where color consistency, quality control, and compliance with international standards are critical. Unlike visual inspection, which is subjective and influenced by lighting and human perception, color meters provide numerical data that can be reliably compared over time, between batches, and across production sites.

Color meters are widely used in plastics, paints and coatings, textiles, printing, packaging, automotive interiors, consumer electronics, food, pharmaceuticals, cosmetics, and advanced research laboratories.

A color meter is a device that measures the spectral or tristimulus properties of reflected or transmitted light from a sample. The result is expressed in standardized color spaces such as CIE Lab*, LCh°, XYZ, or RGB. These values allow precise comparison between a reference sample and a test sample, enabling accurate pass or fail decisions.

Depending on design and application, color meters may be contact-based or non-contact, portable or benchtop, and may use different optical geometries and illumination systems.

Why Accurate Color Measurement Matters

Color is often a defining quality attribute of a product. Even small deviations can lead to product rejection, brand inconsistency, or regulatory issues.

Key reasons for using professional color meters include:

Ensuring batch-to-batch color consistency
Reducing waste caused by color mismatches
Meeting customer and brand specifications
Supporting objective quality control processes
Complying with ISO, ASTM, DIN, and other international standards
Improving communication across global supply chains using numerical color data

Main Types of Color Meters in This Product Category

Multi Angles Spectrophotometers

Multi angles spectrophotometers are specialized instruments designed to measure color at multiple viewing angles. They are essential for materials with special optical effects such as metallic, pearlescent, or effect pigments.

Key characteristics

Measures color at several predefined angles, typically 15°, 25°, 45°, 75°, and 110°
Captures color flop, sparkle, and graininess
Critical for automotive coatings, plastics, and decorative finishes

Typical applications

Automotive exterior and interior components
Effect coatings and paints
High-end consumer products with visual effects

Spectrophotometers

Standard spectrophotometers measure the full visible spectrum of light reflected or transmitted by a sample. They provide high accuracy and flexibility across a wide range of materials.

Key characteristics

Measures spectral reflectance across the visible range
Converts spectral data into multiple color spaces
Suitable for both solid and liquid samples, depending on configuration

Typical applications

Plastics and polymers
Paints and inks
Textiles
Research and development laboratories

Spectrophotometers are considered the backbone of professional color measurement systems

Geometry: D/8 with SCI and SCE Modes

The D/8 geometry is one of the most widely used optical configurations in color measurement.

What D/8 means

Diffuse illumination using an integrating sphere
Measurement at 8° viewing angle relative to the sample normal

SCI and SCE explained

SCI (Specular Component Included): Measures color including surface gloss
SCE (Specular Component Excluded): Measures color excluding surface gloss

Why this matters

SCI is ideal for color formulation and consistency control
SCE correlates better with human visual perception
Switching between SCI and SCE allows deeper understanding of surface and color interactions

Typical applications

Plastics and molded parts
Painted surfaces
Paper and packaging materials

Non-contact Benchtop Spectrophotometers

Non-contact benchtop spectrophotometers are designed to measure color without physically touching the sample. This is crucial for delicate, wet, soft, or uneven surfaces.

Key characteristics

Optical measurement at a controlled distance
High repeatability in laboratory environments
Eliminates contamination or sample deformation

Typical applications

Fresh paints and coatings
Cosmetic products
Food samples
Textiles and soft materials
Research applications requiring maximum sample integrity

These systems are commonly used in central laboratories and quality control departments where precision and repeatability are critical.

Spectrocolorimeters

Spectrocolorimeters combine the principles of spectrophotometry with simplified operation, offering a balance between accuracy and ease of use.

Key characteristics

Uses spectral measurement rather than filtered sensors
More accurate than traditional colorimeters
Often more compact and user-friendly than full laboratory spectrophotometers

Typical applications

Production line quality control
Incoming and outgoing inspection
General industrial color checks

Spectrocolorimeters are an excellent choice for companies that need reliable color data without the complexity of high-end laboratory systems.

Key Technical Parameters to Consider

When selecting a color meter, several technical factors must be evaluated carefully:

Optical Geometry

Choice between D/8, 45/0, or multi-angle geometry affects how surface texture and gloss influence results.

Measurement Aperture

Different aperture sizes allow measurement of small components, textured surfaces, or large uniform areas.

Repeatability and Inter-instrument Agreement

Critical for multi-site production and long-term quality programs.

Illumination and Observer Conditions

Standard illuminants such as D65, A, or F and observer angles such as 2° and 10° ensure compliance with international standards.

Software and Data Management

Advanced software enables color difference calculations, tolerance setting, trend analysis, and integration into quality systems.

Color Difference and Tolerances

Color meters calculate color differences using formulas such as:

Delta E*ab
Delta E*94
Delta E*00

These values define acceptable tolerances for production. Proper tolerance management reduces disputes between suppliers and customers and ensures consistent decision-making.