Color measurement of granules and pellets, colored and translucent

Free-flowing pellets, granulates and irregular bulk materials are an important part of the plastics manufacturing process. Plastics processing companies rely on the uniform supply of plastic pellets and recyclates for further processing in extrusion.

The raw granulate is an irregular, colorless and possibly translucent sample that is tested before mixing with color additives. The colored masterbatches or compounds are then also measured. HunterLab offers the perfect quality assurance support for this application with precise measurement technology and suitable accessories for inhomogeneous samples.

Our solutions for your products:

Agera L2

Color measurement “as the eye sees”

  • 0°/45° geometry

    This geometry according to DIN corresponds to the color impression that the human eye has of the sample.

  • Ultra dark mode

    High-precision measurement values for deep black or low-light materials such as carbon black, black pigments and powders.

  • Improved QC software

    The EasyMatch QC Essentials 2.0 quality control software is integrated into the device and offers all common color indices and color scales.

Aeros
  • Full spectrum + UV

    With an illumination range of 360-700 nm, the Agera is also suitable for measuring optically brightened samples.
  • Smart user interface

    Your measurement results can be easily transferred to existing LIMS or SPC systems.

  • Easy to use and precise

    Simple "one touch" measurement reduces training time, optimizes the workflow and increases your productivity.

Aeros

Laboratory device for measuring color and degree of browning

  • Non-contact measurement

    The sensor detects the sample without contact and without having to measure through plastic or glass.

  • Large surface area

    The rotating sample plate captures 177.25 cm2 of the sample in 35 measurements in 5 seconds.

  • Integrated QC software

    The EasyMatch QC Essentials quality control software is integrated into the device and provides all the necessary colour indices and metrics.
Aeros
  • Intelligent height adjustment

    The distance sensor automatically compensates for height differences in irregular samples.
  • Smart user interface

    Your measurement results can be easily transferred to existing LIMS or SPC systems.
  • Easy to use and precise

    Simple "one touch" measurement reduces training time, optimizes the workflow and increases your productivity.

Application example:

Inline color measurement of plastic pellets

In the plastics, chemical and recycling industries, color is much more than just an optical feature. It is a key quality indicator that allows conclusions to be drawn about material purity, process stability and batch consistency. In granulate production in particular, the smallest color deviations can have enormous economic consequences - especially if they are detected too late. Inline color control = zero waste A large plastics compounder and recycling specialist in Germany faced precisely this challenge:From time to time, mismatched pellets contaminated a 30-ton product silo. This resulted in significant waste or costly and time-consuming reprocessing. The reason was not a lack of...

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Application example:

Inline color measurement of plastic pellets

In the plastics, chemical and recycling industries, color is much more than just an optical feature. It is a key quality indicator that allows conclusions to be drawn about material purity, process stability and batch consistency. In granulate production in particular, the smallest color deviations can have enormous economic consequences - especially if they are detected too late. Inline color control = zero waste A large plastics compounder and recycling specialist in Germany faced precisely this challenge:From time to time, mismatched pellets contaminated a 30-ton product silo. This resulted in significant waste or costly and time-consuming reprocessing. The reason was not a lack of...

Read More

Further information for you on this topic:

  • Aeros brochure

  • Agera brochure

HunterLab worldwide:

  • Europe / Middle East / Africa

    HunterLab Europe GmbH

  • Dr.-August-Einsele-Ring 15

    82418 Murnau

  • +49 8841 9464

Your local partner:

  • Headquarters, North / South America

    Hunter Associates Laboratory, Inc.

  • 11491 Sunset Hills Road

    Reston, VA 20190-5280

  • +1 571 470 6028

  • Asia-Pacific

    HunterLab Asia Limited
  • Flat E, 13F Leahander Center,

    28 Wang Wo Tsai Street,
    Tsuen Wan,
    New Territories,
    Hong Kong

  • +852 2406 1723

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+49 8841 9464

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Everything to do with color measurement

HunterLab at the analytica in Munich 2026

HunterLab at the analytica in Munich 2026

HunterLab at analytica 2026 - We are there! From March 24 to 27, 2026, international experts will meet at analytica in Munich - the leading trade fair for analytics, laboratory technology and biotechnology. We will also be there again and are looking forward to a personal exchange. 📍 You will find us in Hall A2, Stand 301. Our color experts from HunterLab Europe - Christian Jansen and Lucie Binder - will be presenting the latest solutions for precise and reproducible color measurement in the...

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Products

Our colour measurement solutions are individual and versatile. In our overview you will find the right device and the right software for all applications. In our overview you will find the right device and the right software for all applications.