What are the classification methods of different particle size measurement benchmarks?

Measured parameter

Analytical Method

Particle Size Range（μm）

Length

optical microscope

>0.5

0.001～200

electron microscope

Cross-sectional area, surface area

optical microscope

>0.5

electron microscope

0.001～200

imager

>0.5

sieving method

>3

Light obscuration

0.003～100

Disk centrifugal sedimentation method

0.02～30

light blockage method

1～100

Electromigration classification

0.005～1

volume ,mass

X-ray small Angle scattering method

0.003～0.5

Laser particle size analyzer

0.05～8000

gravity settling method

1～100

resistivity method

0.5～100

Dynamic light scattering method

0.003～10

Diffusion cell

0.005～0.2

Ultrasonic spectrum

0.01～100