The particle size of the drag reducer powder, Mesh number

Concentration, %

Dissolved State

120 - 140

0.1

Solution uniform, no particles and flocs

100 - 120

0.1

The solution has a small number of undissolved powder particles

80 - 100

0.1

The solution has a small number of floccules

60 - 80

0.1

Uneven solution with a large amount of floc

40 - 60

0.1

The aqueous solution is uneven with the “fish eye” formation