To remove 1% primary sludge which of the following size of mesh of a cyclone gritter is used?

To remove 1% primary sludge which of the following size of mesh of a c

1.	To remove 1% primary sludge which of the following size of mesh of a cyclone gritter is used?
A.	150
B.	100
C.	300
D.	50
Answer» B. 100