Agilent 8700 LDIR Chemical Imaging System

Significance of the Topic

The Agilent 8700 LDIR system leverages advanced quantum cascade laser technology and rapid scanning optics to deliver high-definition chemical images with exceptional speed and automation.

Objectives and Study Overview

The primary goal is to introduce a fully automated chemical imaging workflow that accelerates compositional analysis of diverse sample types including tablets, biological tissues, polymers, and laminates, enabling both experts and non-experts to obtain reliable spectral and spatial data with minimal setup.

Methodology and Instrumentation

The system operates in both reflectance and ATR modes, automatically switching optical paths via flip mirrors and sample positioning stages. Infrared excitation is provided by a tunable QCL, and detection is achieved with a single-element, thermoelectrically cooled MCT detector, eliminating coherence artefacts.

Instrumentation Used

• Agilent 8700 LDIR Chemical Imaging System with QCL and fast-scanning optics
• Single-element, cooled MCT detector
• Agilent Clarity software for automated data acquisition and image processing
• Agilent Sample Planer for consistent sample surface preparation

Main Results and Discussion

High-resolution chemical images were obtained for pharmaceutical tablets, revealing spatial distributions of APIs and excipients over an 11 mm diameter tablet in one hour. Polymorphic forms of carbamazepine were distinguished on a 13 mm tablet in 27 minutes. Biological imaging mapped lipid distributions in a 12 × 7 mm brain slice at 1 μm pixel size within one hour. Laminate layers as thin as 2.6 μm were resolved, demonstrating the system’s capability for detailed material analysis.

Benefits and Practical Applications

• Rapid, high-definition imaging accelerates troubleshooting in pharmaceutical formulation and QA/QC
• Automated workflows reduce operator time and method development complexity
• Versatile modes accommodate pharmaceutical, life science, and materials research
• No liquid nitrogen required, resulting in low operating costs

Future Trends and Potential Applications

Integration with advanced data analytics and machine learning will enhance automated interpretation of chemical images. Cloud-based spectral libraries and collaborative platforms are expected to streamline cross-laboratory studies. Advances in multi-modal imaging may combine LDIR with complementary techniques for deeper material characterization.

Conclusion

The Agilent 8700 LDIR system represents a significant advancement in chemical imaging, offering rapid, automated, and high-resolution analysis across a wide range of applications, from pharmaceutical development to advanced materials research.