Vaccine preparation tools have come a long way, but the laboratory incubator remains an essential lab apparatus.

Some laboratory instruments are almost timeless. Sure, technology advances, but the basic role of the instruments are so essential to laboratory operations that older versions are simply replaced with newer.  The analytical balance is one such instrument, and the laboratory incubator is another.  This 1952 paper outlines work done by researchers at the Department of Bacteriology and Immunology at the Jefferson Medical College of Philadelphia to stabilize the lyophilized BCG vaccine—the tuberculosis vaccine.  The paper compared the stability of various formulations stored at lab refrigerator temperatures and in a 38 degree C incubator.

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