Zehntner Gloss


Ultraportable digital glossmeter
  • Ultra-fast and accurate
  • Compact and light-weight
  • Wireless connectivity to Mobile App and Cloud


Stand-alone use / Coatings, plastics, and related materials. 20° (high-gloss), 60° (mid-gloss) and Haze / Calculation of reflection haze H in accordance with ASTM D4039

Optical quality assurance with wireless gloss measuring technology and easy data management
Superior accuracy thanks to Swiss Made optics, electronics and algorithms.
The most compact and ultralight Glossmeter ever made. Measure tight curved spaces, in all orientations with ease.
Unmatched productivity thanks to on-the-go reporting and collaboration. Generate reports and share them instantly with your coworkers and customers, anywhere, anytime.

Swiss Made
Software for Proceq Glossmeter App
Software / Workspace App
Tech Specs
Mobile App
Zehntner Live app runs on any Apple® iOS device (iOS 9 and later)

Workflow features
Logbook with geolocation, audio, image and text annotations
Series statistics
Series report
Indication of reflection haze H

Visualization features
Bar diagram
Pass/fail threshold values per geometry

Verification features
Custom adjust on 2nd calibration standards

Reporting features
Data export to XLS, CSV
Reporting export to PDF

Cloud features
Cloud synchronization
Cloud-enabled Logbook
Cloud-based report generation

English, Chinese, French, German, Italian, Japanese, Korean, Portuguese, Russian, Spanish
ZG8000 Tech Specs
Tech Specs
PC Software
Zehntner Live App & website interface

Standalone device: OLED Monochrome, 256 x 64 px,
active size 50.7 x 12.4 mm / 2.0 x 0.5 in
Live use: Any compatible Apple® iOS device

Device if offline: approx. 20’000 measurements
App: Up to 1 TB (depending on the Apple iOS device)

Bluetooth® Low Energy to Apple iOS device
Wi-Fi or 4G to Proceq Live cloud

Contact measurements: with mounted nose
Contactless measurements: without nose having measuring distance of 5 mm / 0.2 in

Measurement Modes

Measuring Area
20°: 3.5 mm / 0.14 in
60°: 3.8 x 6.5 mm / 0.15 x 0.26 in

Measuring Geometries
20° (high-gloss), 60° (mid-gloss) and Haze

Measuring Range
20°: 0 – 2’000 GU
60°: 0 – 1’000 GU
H : 0 – 1’000 HU

ca. 150 g / 5.3 oz

Removable, 1x AAA, flight-safe

Report Generation
Data export to XLS, CSV
Reporting export to PDF

Operating Temperature
0 to 40°C (32 to 104°F), <95% RH, non-condensing

Special Features
Stray Light Compensation
High-contrast OLED screen
Target positioning laser

Innovation Award
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What is the difference between the SCAN mode and the CONTINUOUS mode of the ZG8000 Glossmeter?
The ZG8000 glossmeter family (ZG8000 and ZG8150) allows precise gloss measurements at very high speed. The device features two modes for automatic measurements: SCAN mode and CONTINUOUS mode. In the SCAN mode, the device is continuously executing measurements at the highest possible rate. This is depending on the device. The ZG8150 can perform up to 20 measurements per second. In the CONTINUOUS mode, the device is performing repetitive measurements at a predefined rate. This rate is configurable and can be set from 500ms to several seconds.

What is specular reflection or specular gloss?
A specular reflection or gloss is what you get from a polished surface or mirror. It is clear, and you can see "through" the mirror. A diffuse reflection is what you get from a white wall. The light is bounced off it, but in random directions, so you cannot see the light source in the reflection. Many surfaces will be a mix of specular and diffuse - e.g. a smooth desktop will give both kinds of reflection. A polished surface gives more specular reflection and less diffuse reflection.

What is a measurement angle?
Measurement angle refers to the angle between the&nbsp;incident light on a surface&nbsp;and the line perpendicular to the surface at the point of&nbsp;incidence. In specular reflection the incident and reflected angle are identical. Typically, three measurement angles (20°, 60°, and 85°) are used to cover the majority of industrial coatings applications (Figure 1). The angle is selected based on the anticipated gloss range. Some measurement instruments offer the option to measure multiple angles at the same time.

What difference in gloss units is visible to the human eye?
There are no distinct differences in gloss units for the human eye to point out between the two samples. The detectable differences depend on the gloss level of the sample&nbsp;e.g. 3.0 GU difference measured on a very matte surface (perhaps 5GU), would be seen by the human eye but on a higher gloss coating (perhaps 60 GU) the difference would be very difficult to notice.&nbsp; For a dedicated product the tolerances have to be evaluated experimentally (by end users tests of your coatings or internal "experts"). Another good option is the use of a 20/60/85 degrees instrument, which show more equality to the gloss differences due to the three measurement angles. Experience shows that a gloss difference of 5 GU, when measured with the correct geometry is just visible to a trained observer.
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Standards & Guidelines

  • Arrow, click names to download Standards & Guidelines ASTM D2457
  • Arrow, click names to download Standards & Guidelines ASTM D523
  • Arrow, click names to download Standards & Guidelines BS 3900-D6
  • Arrow, click names to download Standards & Guidelines GB/T 9754-2007 ( Russia )
  • Arrow, click names to download Standards & Guidelines ISO 2813
  • Arrow, click names to download Standards & Guidelines JIS Z 8741