The Y09-3016 laser dust particle counter adopts a semiconductor laser light source and a liquid crystal screen display. It has small size, light weight, high detection accuracy, simple and clear functional operation, computer control, and can store and print sampling results. It is very convenient for testing in a clean environment. It can directly detect clean environments with cleanliness levels ranging from 300000 to 10. Widely used in industries such as electronics, optics, chemistry, food, cosmetics, healthcare, biological products, aerospace, etc.