Sheldon Manufacturing is meeting high demand for laboratory incubators due to the outbreak of the H1N1 virus. The company says in an announcement that one of its top dealers, Labtech, placed an order for all on-hand incubators to be shipped to Mexico City at the center of the outbreak. The incubators, used for the culture of viruses, bacteria and tissue, are a key tool for researching virus strains and sensitivity to anti-viral compounds. Release