The scraper Fineness Meter is an instrument used to measure the fineness of paint, ink, paint and other materials, and the grinding fineness is a measure of the dispersion degree of pigments and extender pigments in paint, and is one of the important internal qualities of paint. It has a great influence on the quality of the film, the gloss, durability and storage stability of the paint film. After using the scraper Fineness Meter correctly, how to read the scraper Fineness Meter correctly is also a factor that affects the grinding fineness of the material.
After the scraper is pulled, immediately (not exceeding 5 seconds) the line of sight should form an angle of 15-30° with the groove plane, and observe the place where the first particle point appears on the sample, in the range of 3mm across the chute (see the position in the figure below ) contains 5-10 granular points, write down the reading (accurate to the minimum division value). Scattered dots may appear above where dense particle dots appear, which can be ignored. After determining the 3mm position, take the upper limit of the nearby value, and read the results of the scraper Fineness Meter according to the following accuracy, which is the fineness of the material particles such as pigments in the paint.
The main thing is: In order to ensure the accuracy of the data, the test should be repeated three times, and the results of the test should be the arithmetic mean of two similar readings; the error of the two readings on the scraper Fineness Meter should not be greater than the scraper used The minimum division value of the Fineness Meter.
