Abstract: Disclosed herein is a process for preparing a highly concentrated allergenic intermediate from a dilute allergen extract. This process involves providing a crude extract comprising biological material from an allergenic source, where the biological material comprises a solid phase portion and a liquid phase portion; concentrating the crude extract using pervaporation; adjusting the pH of the concentrated crude extract to 4.0-5.0; treating the concentrated extract with a ketonic solvent to form a precipitate; and recovering the precipitate by filtration to obtain a highly concentrated allergenic intermediate.

Abstract: An invention provides a label for a pharmaceutical container. The label has at least two sections, one of which is affixed to the pharmaceutical container, the other section being connected to the container by the first label section. The label is adapted such that the second section can be wrapped around the container for storage and may be unrolled from the container and read by a user.