Test how smoothly your paint, coatings, slurries, and other mixtures are blended. These gauges check for coarse particles and how they clump together, otherwise known as grind, which affect texture and application. With both a micron and Hegman scale, there’s no need for conversions. Gauges have two identical grooves to test samples side by side. Made of 440C stainless steel, they have excellent wear and abrasion resistance for repeated use with a wide variety of materials. They also resist corrosion.

Place your sample in the deep end of the groove and draw it evenly towards the shallow end with the scraper. To identify the sample’s rating, check where particles clump together on the scale.

Choose a broad scale range for thick samples, such as ceramic slurries. Choose a narrow scale range for extra precision with thin samples, such as printing ink. The broader the range, the more gradual the groove depth.

Microns (µm) are one millionth of a meter. A Hegman scale, also known as a National Standard scale, ranges from 8 to 0. The finer the grind, the lower the micron value, and the higher the Hegman value.