This instrument is a rapid instrument for measuring the average particle size of powder particles based on the principle of air permeability. It is commonly known as the Fischer apparatus (Fsss), also known as the Fischer ultrafine screen. It is an essential detection method for the research and production of magnetic materials, powder metallurgy, refractory metals, special ceramics, tungsten and molybdenum materials, cemented carbide, nonferrous metals, nonmetals, chemicals, building materials, national defense functional materials and powders.

* Features are as follows:

The performance is stable, the operation is simple, and the repeatability is good. The Fisher pump made of wear-resistant metal works without noise, and the pressure of the instrument is further stable, thus prolonging the service life of the instrument. This instrument can also measure the specific surface area, expanding the pore range from 0.40; 0.80 is extended to 0.25 in both directions; 0.40，0.40; 0.80，0.80; 0.95； And meet that detection requirements of various pow industries.

Main technical indexes of WLP-205A average particle size analyzer:

1. Measuring range: 0.20

-50, 50-100 (micron)

2. Porosity range: 0.25-0.40, 0.40-0.80, 0.80-0.95.

3. Repeatability: 3%

4. Ambient temperature: 25±10°C

5. Accuracy: 3%

6. Power: 30W

7. Power supply: 220V±22V

8. Weight: 18kg

9. Overall dimension: 735×414×244mm³