In collaboration with LUM GmbH, Berlin, SWK developed a very complex cuvette contour with an optical path length of only 1mm. This cuvette is utilized for the characterization of nano and microparticles as well as suspensions and emulsions. After the injection mold was completed by SWK, the cuvette series production was also finished in-house at SWK. They are now used globally in modern analysis instruments.