Chemical analysis and physical measuring procedures require not only professional competence, but in particular an understanding of the interests and needs of the customer. More than 60 years of experience in paper technology, cutting-edge analytics and experienced scientists make PTS an impartial, independent expert capable of supplying customised solutions for every individual task. The question to be answered is often difficult and complicated. Many different properties and impact factors must be analysed systematically in order to identify specific differences in product performance or to detect possible causes of differences in quality. A pool of more than 500 individual methods provides results that can be combined quickly and reliably by the skilled PTS staff to place them in the context of an overall picture.