• Particle Size Distribution Measurement

Measurement and Testing

Particle Size Distribution Measurement

Mar 10 2022

Particle size distribution is an important factor in the manufacture of many products, from cement to perfume. A proposed ASTM International standard (WK45240) will set out a general approach to the particle size distribution measurement of powders, suspensions, or slurries using an appropriate wet or dry methodology by the laser diffraction technique.
ASTM’s committee on particle and spray characterization (E29) is developing the proposed standard.
“The proposed standard should allow anyone that has a laser diffraction instrument for the measurement of particle size distribution to develop methods in a scientifically logical manner providing repeatability, reproducibility, and robustness,” says ASTM International member Alan Rawle. “The main users will be companies in the pharmaceutical, construction materials, food and beverage, ceramics, and mining industries, among others.”
Applications in which particle size distribution is used to control final performance, saving time, yield, and money, include, but are not limited to:
• Fuel injection into diesel and gasoline powered automotive engines;
• Emulsions such as milk and mayonnaise;
• Perfume;
• Paints and coatings; and,
• Ceramic plates and wash basins.
In addition to industry, regulatory bodies and laboratories that work with laser diffraction equipment will find the proposed standard useful.

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