Table 1 Sizes of CeO₂ and ZnO as measured with SEM, STEM-in-SEM, BET, DLS and DMAS.

SEM (method ❸)

d_{MinFeret,50,0}

34.7

27.1

d_ECD,50,0

38.7

30.4

STEM-in-SEM (method ❷)

d_{MinFeret,50,0}

25.3

20.2

d_ECD,50,0

29.1

22.5

VSSA

d_VSSA

32

42

DLS

d_50,3 (d_50,0)

63*(39)

200*(132)

DMAS

D_50,0,emob

37.4

–**

Producer information

Nominal value

 < 50

20