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Frequently Asked Questions About Gloss

Why Measure Gloss

Gloss is an aspect of the visual perception of objects that is as important as colour when considering the psychological impact of products on a consumer...

How do I use a glossmeter to measure gloss?

A glossmeter (also gloss meter) is an instrument which is used to measure the specular reflection (gloss) of a surface...

How is gloss measured?

glossmeter (also gloss meter) is an instrument which is used to measure the specular reflection (gloss) of a surface...

Which product is correct for my application?

ISO 2813 and ASTM D523 (the most commonly used standards) describe three measurement angles for the measurement of gloss across surfaces of all levels.

What gloss standard should I use to measure gloss?

Many industries have adopted the 20/60/85º geometries as specified in ISO2813/ ASTM D523, however consult the table below for more information on specific industries and their industrial standards.

What is a gloss unit?

The measurement scale, Gloss Units (GU), of gloss meters is a scaling based on a highly polished reference black glass standard with a defined refractive index having a specular reflectance of 100GU at the specified angle.

What difference in gloss units is visible to the human eye?

If two different coatings are measured, what number of gloss units would be detectable by the human eye, how many units would be perceived as significantly different?

Why should I send my glossmeter for manufacturer's recalibration?

As well as calibrating your glossmeter on its own reference gloss tile before use, your glossmeter and its tile need to be calibrated yearly by a Rhopoint Approved Service Agent.

How to measure the gloss of plastic or glass

It can be problematic to measure the gloss of flat transparent material such as glass and plastics because light is reflected from both the front surface and internally from the second surface

Contact us to find out more about our range of gloss and appearance measurement instruments.

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