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Colorimeter Selection Guide

Choosing the right colorimeter involves considering multiple factors beyond just whether the substrate is opaque, translucent, or transparent. Here’s a comprehensive guide to help you select the most suitable device for your needs:

1. Substrate Properties

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A. Opacity/Transparency

  • Opaque Materials(e.g., plastics, paints, textiles, metals):

    • Use reflectance-mode colorimeters(most standard models).

    • Key consideration: measurement aperture size(e.g., 4mm, 8mm) to match the sample’s surface texture or feature size (e.g., small parts may require a smaller aperture like 4mm).

  • Translucent/Transparent Materials(e.g., glass, films, liquids, semi-transparent plastics):

    • Choose transmittance-mode colorimeters(ensure the device supports this function).

    • Example: Measure the color of a clear plastic film by placing it between the light source and sensor.

B. Surface Texture

  • Smooth vs. Rough Surfaces:

    • Smooth surfaces (e.g., polished metals, glossy plastics) may require gloss compensation(some advanced models like 3NH’s TS7030 offer this).

    • Rough or uneven surfaces (e.g., textiles, matte plastics) need a colorimeter with a stable contact areaand possibly a larger aperture to average measurements.

C. Thickness and Geometry

  • Thick or irregularly shaped objects may require a handheld, portable model(e.g., 3NH’s NH300) for easy maneuverability.

  • Thin films or layered materials may need a tabletop modelwith a fixed measurement platform for precision.

2. Measurement Requirements

A. Color Space and Parameters

  • Ensure the colorimeter supports the color spaceyou need (e.g., CIE Lab*, RGB, CMYK).

  • For industry-specific metrics (e.g., whiteness, yellowness, opacity), check if the device includes these pre-programmed indices.

B. Accuracy and Repeatability

  • High-Precision Needs(e.g., automotive paints, medical devices):

    • Look for models with low ΔE repeatability (e.g., ΔE ≤ 0.03, like 3NH’s NR10QC).

  • General Quality Control:

    • A mid-range model (ΔE ≤ 0.1) may suffice (e.g., 3NH’s NH300 with ΔE < 0.07).

C. Measurement Aperture

  • Match the aperture size to your sample:

    • Small objects (e.g., buttons, fibers): 4mm or smaller aperture (e.g., NR60CP with 4mm/8mm switchable).

    • Large, uniform surfaces: 8mm or larger aperture (e.g., TS7030’s Ø8mm platform).

    • Specialized needs (e.g., curved surfaces, narrow gaps): Models with tip apertures(e.g., TS7030’s tip aperture for hard-to-reach areas).

3. Industry and Application

A. Common Industries and Recommendations

  • Plastics/Automotive:

    • Require high accuracy and gloss compensation. Choose models like 3NH TS7030(supports gloss measurement and multiple apertures).

  • Textiles/Printing:

    • Need portability and multi-aperture options for fabric swatches or printed materials. 3NH NR10QC(dual positioning, auto-calibration) is ideal.

  • Food/Beverages/Liquids:

    • Transmittance-mode measurement is critical. Look for models with a transmittance accessory(e.g., cuvette holders for liquid samples).

  • Research/Laboratories:

    • Require advanced features like spectral data outputor PC software integration (e.g., 3NH CQCS3 software for trend analysis).

B. Compliance with Standards

  • Ensure the device meets industry standards (e.g., ISO, ASTM, DIN) for your application (e.g., ISO 11664 for color spaces, ASTM E313 for whiteness).

4. Operational and Functional Features

A. Ease of Use

  • Calibration:

    • Auto-calibration (e.g., NH300’s boot-up calibration) or built-in white board (e.g., NR10QC) reduces setup time.

  • Ergonomics:

    • Handheld models should be lightweight and comfortable for long-term use (e.g., NH300’s ergonomic design).

B. Data Management

  • PC Software Compatibility:

    • Models with software (e.g., CQCS3) enable data storage, trend analysis, and report generation (critical for QC documentation).

  • Connectivity:

    • Bluetooth/Wi-Fi capabilities (e.g., NR110) allow real-time data transfer to smartphones or computers.

C. Power and Portability

  • Field Use:

    • Prioritize rechargeable lithium batteries (e.g., NH300: 5,000+ measurements per charge) and compact design.

  • Bench Use:

    • Tabletop models may offer more advanced features but require a stable setup.

5. Budget and Long-Term Needs

  • Entry-Level:

    • Basic handheld models (e.g., 3NH NH200) for small businesses or occasional use (cost-effective, suitable for simple color comparison).

  • Mid-Range:

    • Models like NH300 or NR10QC balance accuracy and affordability for most industrial applications.

  • High-End:

    • Advanced devices (e.g., TS7030) with multi-apertures, gloss measurement, and extended light source life (ideal for large enterprises or rigorous QC).

6. Additional Considerations

  • Gloss Measurement:

    • If you need to assess both color and surface gloss, consider combined colorimeter-gloss meter devices(e.g., 3NH’s integrated solutions).

  • Multi-User Environments:

    • Look for models with user profile management or password protection to ensure consistent settings across operators.

  • After-Sales Support:

    • Check for calibration services, warranty, and technical support (e.g., 3NH’s global service network).

Summary: Step-by-Step Selection Guide

  1. Identify Substrate Type: Opaque, translucent, or transparent; note surface texture and size.

  2. Define Accuracy Needs: Low ΔE for critical applications (e.g., ΔE ≤ 0.03) vs. general use (ΔE ≤ 0.1).

  3. Match Industry Standards: Ensure compliance with relevant regulations and measurement indices.

  4. Evaluate Features: Prioritize ease of use, aperture options, software support, and portability.

  5. Set Budget: Balance upfront cost with long-term functionality (e.g., light source lifespan, battery durability).

By systematically addressing these factors, you can select a colorimeter that optimizes accuracy, efficiency, and value for your specific application. If unsure, consult the manufacturer (e.g., 3NH) for personalized recommendations based on your sample and workflow.

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