Gloss
Overview
Gloss is an optical property of a surface, characterized by its ability to reflect light. If a light beam strikes a surface – e.g. a lacquer – with a certain angle of incidence (ε), most of it will penetrate the layer of paint, the rest will be reflected.
Usually, the measuring results for paints and varnishes are indicated between 0 and 100 gloss units. It is important to remember that this number is not a value in percentage. The reflectometer value is not related to the amount of light but to a black polished glass standard of a defined refractive index (1,567). For this standard, the measured value is set to 100 gloss units (GU).
Polished metals, mirrors and certain foils have a much higher refractive index than varnishes and as the black glass standard used for calibration. For this reason, you may find much higher gloss values than 100 for these products, in fact up to 2‘000 GU.
![](https://trend-tech.at/wp-content/uploads/2022/12/trend-tech-produktvorschau-640x480px-zgm1020.png)
ZGM 1020
Glossmeter
The classic portable precision glossmeter for measurement of different surfaces from matt to high gloss usable in all industries.
![ZGM 1120](https://trend-tech.at/wp-content/uploads/2021/11/trend-tech-produktvorschau-640x480px-zgm1120.png)
ZGM 1120
Glossmeter
Small-sized precision glossmeter with USB-interface which is especially suitable for gloss measurements on the smallest of parts and on very confined surfaces.
![ZGM 1130](https://trend-tech.at/wp-content/uploads/2021/11/trend-tech-produktvorschau-640x480px-zgm1130.png)
ZGM 1130
Glossmeter
The very first glossmeter featuring a 2.4” touchscreen display for measurement of all gloss ranges from matt to high gloss up to 2‘000 GU.
![ZOL 1150](https://trend-tech.at/wp-content/uploads/2021/11/trend-tech-produktvorschau-640x480px-zol1150.png)
ZOL 1150
Online-Glossmeter
Tailored gloss-measuring system for industrial areas for contactless online measurement of all gloss ranges from matt to high gloss up to 2‘000 GU.