The Alpine Air Jet Sieve is a laboratory instrument used for particle size analysis. It employs a jet of air to separate particles based on their size, allowing for precise measurement of fine powders. This method is particularly useful in industries such as pharmaceuticals, food, and materials science, where understanding particle size distribution is crucial. The device typically features a sieve with a specific mesh size, through which air is forced. As particles are introduced, smaller particles are carried away by the air stream, while larger ones remain on the sieve. This process helps ensure consistent quality and performance in products related to pharmaceuticals, food processing, and materials engineering.