The invention relates to a process for the isolation andor purification of a proteinaceous material, wherein a solid phase comprising a mixture of hydrophobic and hydrophilic groups is used. The blank is cut from a metal sheet and has a curve-shaped curved edge portion with two ends. This hybrid drive arrangement permits use of a modified transfer case in place of a conventional transfer case in a traditional four-wheel drive driveline. The region may be defined at least partially by an interior of the housing and an exterior of the container. Gas is prohibited from exiting the gas canister and inflating the bag until hydrostatic pressure acting upon the retriever exceeds a designated amount.