ASTM E2153-01(2023) PDF

Overview

ASTM E2153-01(2023), Standard Practice for Obtaining Bispectral Photometric Data for Evaluation of Fluorescent Color, establishes procedures for precise measurement and evaluation of fluorescent color properties using bispectral photometric data. Developed by ASTM, this international standard outlines instrumental requirements, calibration techniques, and best practices for characterizing the color appearance of fluorescent specimens, providing a robust foundation for accurate and repeatable color measurement in industries where fluorescent materials are used. The primary focus is on object-color measurement under reflection geometries and on illuminant-independent assessment using the Donaldson radiance factor.

Key Topics

• Bispectral Photometry: Defines the requirements and procedures for using bispectrometers, which utilize two independently controlled monochromators to obtain quantitative bispectral data. This method enables thorough characterization of fluorescent materials.
• Donaldson Radiance Factor: Describes the calculation and significance of the Donaldson radiance factor, an instrument- and illuminant-independent property crucial for color evaluation of fluorescent samples under any illuminant or observer.
• Measurement Parameters: Identifies necessary parameters for bispectral measurement, including photometric quantities, irradiation and viewing geometries, spectral ranges, and calibration standards.
• Calibration Procedures: Provides procedures for instrument calibration with certified material standards and verification of photometric and wavelength scales to ensure high accuracy and consistency.
• Specimen Selection and Handling: Highlights the importance of specimen characteristics (such as uniformity and optical properties) and careful handling to maintain measurement reliability.
• Data Reporting: Recommends comprehensive documentation of measurement parameters, specimen descriptions, calibration details, and bispectral data outputs (Donaldson matrix).

Applications

ASTM E2153-01(2023) offers practical value across a wide range of industries and research fields by enabling precision color measurement and evaluation of fluorescent materials, including:

• Quality Control in Manufacturing: Ensures consistent color appearance of fluorescent products, such as textiles, coatings, plastics, and security features.
• Research and Development: Facilitates the development and characterization of new fluorescent materials by providing accurate, reproducible photometric data.
• Regulatory Compliance: Supports compliance with industry and international color standards for fluorescent materials.
• Instrument Calibration and Verification: Provides protocols for maintaining and verifying the calibration of color measurement instruments.
• Color Matching and Specification: Plays a key role in applications that require precise color matching-such as paints, printing, and product design-by enabling accurate evaluation under various lighting conditions.

Related Standards

ASTM E2153-01(2023) references and aligns with several important standards and guides, enhancing its compatibility and integration with established practices:

• ASTM E2152: Standard Practice for Computing the Colors of Fluorescent Objects from Bispectral Photometric Data
• ASTM E179: Guide for Selection of Geometric Conditions for Measurement of Reflection and Transmission Properties of Materials
• ASTM E1164: Practice for Obtaining Spectrometric Data for Object-Color Evaluation
• ASTM E1341: Practice for Obtaining Spectroradiometric Data from Radiant Sources for Colorimetry
• ASTM E284, E925, E958: Contribute definitions, terminology, and detailed calibration and measurement protocols relevant to appearance and colorimetry.

Other supporting publications from international bodies like CIE (International Commission on Illumination) and national laboratories (NPL, NIST) are referenced for calibration and measurement methods.

Keywords: ASTM E2153, bispectral photometric data, fluorescent color evaluation, Donaldson radiance factor, bispectrometer calibration, colorimetry, instrument calibration, appearance measurement, material standards, reflection geometry, color standards, ASTM standards on fluorescence.