The standard provides a quantifiable scale for gloss, allowing manufacturers to move away from subjective visual assessments and use precise numerical values instead. The Optics Behind Gloss Measurement
standard, titled "Standard Test Method for Specular Gloss," is the primary international guideline for measuring the visual shininess of nonmetallic materials. The current active version is ASTM D523-14(2018) astm d523 pdf new
The "new" or currently active version of ASTM D523 (such as D523-14(2018)) outlines specific geometries for different applications: The standard provides a quantifiable scale for gloss,
The ASTM D523 standard has various applications in different industries, including: Variations in temperature and humidity can impact the
The measurement process compares the amount of light reflected from the test specimen to the amount reflected from a highly polished, reference black glass standard.
Variations in temperature and humidity can impact the curing and final gloss of paint and coatings. Standardizing your lab's environment is crucial for repeatable results.
Gloss tests are executed using specialized devices known as gloss meters . Modern instruments—such as the PosiTector GLS Gloss Meter or BYK-Gardner units—automate this process, using single or multiple angles to take readings in under a second. Where to Access the ASTM D523 Document (PDF)