between the depth of particle settlement and the particle size. It is mainly used to measure the size and distribution of particles in pigments, inks, coatings and other samples.

Principle of operation
Sample application: Apply the sample to be tested on the flat surface of the scraper fineness meter.

Scraping the sample: Use a scraper or scraper to scrape the sample flat so that it fills the whole measuring area of the scraper fineness meter.

Particle settling: The particles in the sample will settle in the grooves or channels of the scraper fineness meter.

Particle size fineness: Depending on the size of the particle, particles of different sizes will settle to different depths in the groove.

The principle of the scraper Fineness gauge is based on the relationship 

Reading results: The scraper fineness meter is usually marked with a scale corresponding to different particle size fineness or wear level. By reading the scale, the size and distribution of the particles in the sample can be determined.

The principle of scraper fineness meters is simple, intuitive, and does not require complex equipment, so they are widely used in pigments, inks, coatings, and pigments industries to quickly assess the particle size and distribution of samples. It is a tool for rapid qualitative assessment of particle fineness, but is not suitable for measuring the absolute size of particles. For more accurate particle size measurements, it is often necessary to use more sophisticated instruments, such as laser granulometers or electron microscopes, etc.