An ultra filtration membrane having pore diameter 70 A is used for haemo globin separation.the number of pores per mm square are 100 of membrane.thickness of membrane =0.001 mm.the blood flows at flux of 10 gm/mm2-sec.find pressure drop through membrane.take viscosity of blood =0.0027 N-s/m2.

A=is angrstm
Poiseuille's law will be apllied?

find solution?

J=(N x pi x x diameter^4 x pressure drop)/(128 x viscosity x length )