Malvern Instruments has launched the Zetasizer APS, a new dynamic light scattering (DLS) system which automates size measurements of samples in 96- or 384-well microplates. Designed primarily for protein specialists, the new system is fully automated, simply requiring users to insert the plate and press start. The Zetasizer APS allows quick and easy investigation of a protein’s condition at different stages of the purification process, and at later stages of formulation under a range of environmental conditions. The measurement technology used delivers results with exactly the same high precision and reproducibility you would expect from a research grade batch DLS system. There is no compromise in data quality due to automating the measurement. Dynamic light scattering measures the thermal diffusion of proteins and nanoparticles in solution, enabling accurate size determination.