Promethean designs and manufactures inorganic nanomaterial dispersions using continuous-flow hydrothermal and solvothermal synthesis. They manufacture nanoparticles in liquid dispersion rather than dry powders to greatly reduce inhalation risks and make containment of nanomaterials easier. Promethean is strongly involved in European projects focusing on nano safety and risk reduction through both reducing exposure and reducing hazards of nanomaterials through collaborative research. Nano safety is the highest priority for Promethean in their manufacturing processes and research.