Bruker Optics Inc. has introduced a compact infrared microscope that uses attenuated total reflection (ATR), external and diffuse reflection, and reflectance absorption to provide sample visualization and infrared analysis. The Helios microscope is suited for applications such as forensics, quality control and assurance, art conservation and contaminant analysis. ATR crystals also are available in silicon, germanium, diamond and zinc sulfide. Video images of samples can be saved or copied into Windows-based applications. The instrument is mounted on a proprietary quick-lock base plate for reproducible mounting in the sample compartment.