510-87 The definition of air jet sieve?
The air jet sieve is also called airflow sieve. It is a kind of particle size measuring instrument often used in laboratory. It uses airflow to complete the sieving. The ordinary airflow cannot complete the sieving. The instrument characteristic is that the airflow passes through special parts, forming jet air flow to sieve the powder with high efficiency.
Air Jet Sieve https://www.isizer.com/air-jet-sieve-analysis-by-micron-air-jet-sieve-shaker/