Construction and application of a low‐speed centrifuge for thermodynamic investigation of macromolecular systems

Abstract

Abstract A description is given of the design, construction and application of a 0–2000 rev/min centrifuge for studying liquid‐liquid phase separations in macromolecular systems at temperatures of 0–200 °C. The concentrations in the phase can be measured with the aid of the complete optical schlieren system of the Model‐E Spinco‐Ultracentrifuge. Owing to the low rotational speed, sedimentation‐velocity and sedimentation‐diffusion equilibrium measurements can be carried out also in solutions containing macromolecules of very high molecular weight.