An agglutinographic slide for immunochemical liquid agglutionation particle reagents has a first panel and a second panel. The second panel is spaced a predetermined distance from the first panel. The slide has an entrance end and a viewing end. A channel is positioned between the first and second panels...http://www.google.com.au/patents/US4775515?utm_source=gb-gplus-sharePatent US4775515 - Agglutinographic slide
