Beckman Coulter 153A Microtitrator

The Beckman Coulter/Spinco Model 153 Microtitrator is a precision instrument designed to titrate very small volumes of liquid, a niche tool used in early micro‑titration workflows in chemistry and biochemistry labs. Historical documentation from Beckman’s Spinco division shows the Model 153 Microtitrator pictured with a Microfuge centrifuge and assorted accessories, illustrating how it was integrated into laboratory benches of the era. The kit for this model commonly includes a cover, manual cups, and a tray, consistent with the parts shown in archival images and the product description you provided. As a mid‑20th‑century instrument, it reflects Beckman’s lineage in precision measurement equipment and is primarily of interest to researchers, restorers, or collectors seeking authentic vintage titration hardware.