Patented design assures permanent optical alignment and vibration immunity.

• Interferometer sub-system, show "split" to reveal internal parts, is easely removed for repair or replacement.
• Gas laser assures permanent spectral accuracy.
• Self contained interferometer sub-system contains power supply, infrared source, detector, A/D converter and permanently mounted transfer optics.
• Sample cell removes for quick cleaning or replacement. Transfer mirrors remain fixed.

FTIR analysis in four steps:

1. Interferometer modulates a beam of infrared light and send it through the air sample, where...
2. Airborne chemicals absorg infrared light. The remaining light is reflected to a detector, where...
3. Infrared light intensity is digitized, then computed into an error-free infrared spectrum containing analytical information.
4. Computer examines infrared spectrum, identifying each chemical and measuring its concentration;