Dynamic light scattering analysis is a technique used for the measurement of the size of nanoparticles in a liquid medium. In this technique, the scattered intensity of the particles in the liquid medium is used to calculate the size of the nanoparticles in the solution. This technique is used by torskal to ensure the quality and accurate characterization of the size of the gold nanoparticles produced by the company. This technique also verifies the quality of the nanoparticles by ensuring the accurate distribution of the particles in the solution and detecting any aggregation of the nanoparticles, which is a major problem in the use of nanoparticles in research and laboratory activities. Advanced techniques are used by torskal to ensure the quality and accuracy of the nanoparticles produced by the company.