The following data are given for a sedimentation tank:

Flow through velocity

$=0\mathrm{.}3$ m$/$s;

Depth of water in the sedimentation tank

$=0\mathrm{.}9$ m

Specific Gravity, Gs

$=2\mathrm{.}65$

Assuming that the Stokes Law is valid, determine the diameter of particles that would be removed with a $100\%$ efficiency.