The gloss meter tests the gloss of quartz feldspar mica. Let’s take a look at it with the editor of Best Tri gloss meter on sales!
The gloss of a stone refers to the degree of reflection of visible light on its surface. It is a physical quantity that evaluates the ability of the stone surface to reflect light under specified geometric conditions. It has direction selectivity. The stone gloss we often say refers to "mirror direction". "Gloss" is an important criterion for verifying the quality of stone. The degree of gloss is determined by the refractive index of various minerals that make up the rock and the surface microstructure. Generally speaking, the mineral composition of the same kind of stone is basically similar. The smoother the surface, the higher the surface gloss of the stone. However, in the process of stone gloss testing, there are many factors that will affect the evaluation of stone gloss, so it is necessary to strictly follow the stone gloss evaluation standard for testing. However, there are also relevant precautions when testing, and the editor of Best Tri gloss meter on sales will then introduce to you.
1. The surface of the sample should be smooth and free of defects such as blisters, and the surface should be wiped clean before measurement.
2. The surface of the sample should be flat without bending. Generally, the gloss meter is not suitable for curved surface measurement. Unless the gloss meter is calibrated with a surface with the same curvature of known gloss value in advance, the value measured on the curved surface is not accurate.
3. Before each measurement, the gloss meter must be calibrated with a standard plate. When calibrating the instrument, first use a high gloss standard plate for calibration, and then use a medium gloss or low gloss standard plate for calibration.
4. The gloss value measured by selecting different irradiation angles may be different, so the gloss meter with the correct angle should be used for testing. Generally, a 60° angle gloss meter is used for testing. When the measured value is greater than 70°, a 20° angle gloss meter can be used for testing; when the measured value is less than 30°, an 85° angle gloss meter can be used for testing.
5. Generally, multiple points evenly distributed on the sample should be selected for measurement.
The above is the best Tri gloss meter on sales editor's knowledge of gloss meter, I hope it can help you.