Some of the leading manufacturers of multi-pass cells for gas analysis turn to OPTICON for the fabrication of their optics. Our ability to provide multiple or "complex" mirror surfaces on a single substrate with repeatable, bolt-in-place alignment makes instrument assembly and field service an easy process. Special stainless steel mirrors allow cells to be used in extreme environments without the danger of adhesives breaking down at high temperature or under exposure to corrosives. Mirrors for White Cells, Herriot Cells, and even custom aspheric-based cell designs can be produced at very competitive prices.