Optical properties are important to the manufacturer, vendor and user of paper and board because they are a major factor in the appearance and appeal of the product. This is true not only for the paper and board itself, but also its conversion. For example, increasing gloss by varnishing the highlights of a selected area causes it to stand out from the background. Optical properties relate to all aspects of the product appearance including whiteness, brightness, color, opacity and gloss.

Find out more about the importance of testing these optical properties in our paper here: Optical Testing Application Information for Paper and Paperboard