Higher is the mesh number, smaller will be the aperture size of the screen. It means that the aperture size of a 200 mesh screen will be smaller than that of 20 mesh screen. This is valid for

German standard screens (DIN 1171) etc.

American standard screens (ASTM and Tyler standard screens).

Higher is the mesh number, smaller will be the aperture size of the sc

1.	Higher is the mesh number, smaller will be the aperture size of the screen. It means that the aperture size of a 200 mesh screen will be smaller than that of 20 mesh screen. This is valid for
A.	British standard screens.
B.	German standard screens (DIN 1171) etc.
C.	American standard screens (ASTM and Tyler standard screens).
D.	all (a), (b) and (c).
Answer» E.

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Higher is the mesh number, smaller will be the aperture size of the screen. It means that the aperture size of a 200 mesh screen will be smaller than that of 20 mesh screen. This is valid for

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