The ATR probes allow for easy sample handling during mid-infrared analysis. The absorptions which correspond to the fundamental frequencies of most chemicals, fall into the mid-infrared range of the spectrum. However, most of these absorptions are far too strong for a standard transmission analysis. ATR solves this problem by providing very short effective path lengths. Hellma-Axiom has pioneered the use of ATR for a variety of laboratory and process line tasks and holds a number of important patents in the field.