Titanium dioxide (TiO2) nanoparticles, found in everything from cosmetics to sunscreen to paint to vitamins, caused systemic genetic damage in mice, according to a comprehensive study conducted by researchers at UCLAs Jonsson Comprehensive Cancer Center.

Currently nanoparticles are measured by most particle size analyzers using scattered light; however in some cases this presents many physical restrictions and also requires the input of the refractive index as a measurement condition.