Abstract: A programmable automated turbidimeter/colorimeter system for accurately measuring growth among multiple bacterial specimens is described which in a preferred embodiment includes a motor driven rotatable carousel assembly disposed within an aluminum housing, the carousel assembly including a plurality of evenly spaced peripheral holes for receiving a corresponding plurality of disposable culture test tubes, a light source and a light detector disposed in spaced confronting relationship to each other whereby the culture tubes pass therebetween, and a signal amplifier and a recorder for recording optical densities of each specimen as the carousel is continuously rotated. A concentric magnetic shield may be disposed on one side of the carousel for shielding experimental specimens from control specimens in measurements of magnetic effects on the cultures.

Abstract: A neonatal cradle is described which comprises a plastic first plate member formed to a V shaped trough defined by a two adjoining surfaces disposed at about 105.degree., a foam layer on the first member, a support member having a central notch for positioning and elevating one end of the first member, strips of slip resistant materials between the first member, foam layer and support member, and a restraining belt on the first member.