Uniform color and appearance is directly associated with high quality and thus, an essential purchasing criteria. In order to control color harmony the spectro-guide measures color and 60° gloss simultaneously. The new spectro2guide spectrophotometer represents the next step in the evolution of color measurement. In order to guarantee color stability over time the spectro2guide combines a spectrophotometer with a fluorimeter in one portable instrument. This opens up the possibility to detect and quantify fluorescent light and to predict the color change after decay of fluorescence.