Weck jar secured by steel tension clips which can be removed once a vacuum seal has formed. During storage the vertical position of the rubber seal's external tongue indicates the status of the sealing. Weck products are still produced and are available from German hardware and online stores. Used equipment is frequently sold on online auction sites and in opportunity shops. Weck jar A Weck jar is a molded glass jar used in canning to preserve food. It is popularly used for jam preservation, for its minimal look and foolproof rubber gasket with a glass lid. Weck jars were created by the
Alain de Weck true science and pseudo-science, the immunological aspects of genetically modified organisms (GMOs) and the future of health care policy in different countries. Alain de Weck Alain L. de Weck, (July 26, 1928 – April 8, 2013), was a Swiss immunologist and allergist. His main scientific contributions were in the area of characterization and prevention of drug allergy. He was the founding director of the Institute of Clinical Immunology at the University of Bern from 1971 to 1993 and authored or co-authored over 600 peer-reviewed publications. He is the recipient of a number of patents that led to commercial allergy products