A typical concentration for spinning is 4 % by weight.
As the electric field is increased, the solution at tip of the
capillary elongates from an approximately hemispherical
shape to a spheroidal shape and then to a cone sha
further increase in the electric field, to about 10 V/m,
initiates the ejection of the jet from the apex of the cone. A
stable jet can be obtained by fine tuning the controlled
variables.