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Gloss Units Are Not a Percentage of Shine
Gloss units are a reference-based measurement scale, not a universal percentage of shine. Interpretation also depends on measurement geometry.
Updated · NANOLAB Knowledge
Practical approach
Report GU with the angle and method, and compare suitable like surfaces.
A value of 80 GU should not be marketed as 80% reflective without the appropriate defined conversion and context.
Decision limits
Do not cap all results at 100 or assume a higher number directly measures overall customer-perceived quality.
Related guidance
- Ceramic Coating Gloss Measurements: Why the Angle Matters
- Gloss, Slickness and Protection: Evaluating a Coating Result
- Shear-Thinning Coatings: Why Pouring Behaviour Is Not a Fixed Number
- Quartz Coating Versus Quartz Countertop Sealer: Avoid the Naming Trap
Method reference: Rhopoint: gloss units. References describe their stated methods or products; they do not certify NANOLAB products or establish compatibility with an unlisted surface.
Ask NANOLAB about the exact product and intended use. Use the current product documentation for formulation-specific instructions.
Continue reading
Ceramic Coating Gloss Measurements: Why the Angle Matters
Compare gloss readings with the same measurement geometry, surface preparation and locations rather than treating every gloss number as equivalent.
Gloss, Slickness and Protection: Evaluating a Coating Result
Learn how to assess gloss and finish quality without confusing visual enhancement, tactile slickness and documented protective performance.
Shear-Thinning Coatings: Why Pouring Behaviour Is Not a Fixed Number
A shear-thinning material's apparent viscosity changes with shear rate. A single informal pouring observation does not fully characterize that behaviour.