Home canning afterward. In Australia the most popular home canning system is Fowler's Vacola. This system uses glass jars, single use seals, metal lids, and a water bath canning sterilization process. During the canning process the lids are secured by metal tension clips which are removed once a vacuum seal has formed. Fowler's Vacola products are still produced and are available from some hardware stores. Used equipment is frequently sold on online auction sites and in opportunity shops. In Germany the most popular home canning system is Weck jar. This system uses glass jars (80ml-2.5l) and glass bottles (200ml-1l), reusable rubber seals,
Alain de Weck started investigating the occurrence and root causes of inflammation as well as contact dermatitis due to lymphocytes using the guinea pig nipple as a model for the human skin. This led to the first histopathological demonstration that contact dermatitis is due to sensitized lymphocytes. He then stayed - as the first U.S. Public Health Service funded foreign research fellow from Switzerland - at Barnes Hospital at Washington University in St. Louis from 1958 to 1960 under the guidance of Prof. Herman Eisen. During this time, Alain de Weck made initial contributions to what later became one of his signature research