Figure 4.36: a) Adding solvent to the conical vial by pipette, and using a beaker to support the vial, b) Supporting the vial with a cork ring, c+d) Attaching the Teflon-lined cap to the vial, e) Manu...Figure 4.36: a) Adding solvent to the conical vial by pipette, and using a beaker to support the vial, b) Supporting the vial with a cork ring, c+d) Attaching the Teflon-lined cap to the vial, e) Manual mixing of layers (using a different system). Figure 4.37: a+b) Withdrawal of the bottom layer, with pipette into the tip of the vial, c) Removal of a residual drop of the bottom layer by allowing the layers to separate inside a Pasteur pipette, d) Separated layers.