Air jet sieving is a method used to separate particles based on their size. It involves blowing air through a sample of material that is placed on a sieve. The air helps to lift and carry smaller particles through the sieve openings while larger particles remain on top. This technique is commonly used in laboratories and industries to analyze the particle size distribution of powders and granules. The process is efficient and quick, allowing for precise measurements of particle sizes. Air jet sieving is particularly useful in fields such as pharmaceuticals, food processing, and materials science, where understanding particle size is crucial for product quality and performance.