ASTM E1642

ASTM E1642 is the ASTM standard for general techniques of gas chromatography infrared (GC/IR) analysis, providing a practical framework for using GC and IR methods together. It is relevant when laboratories need a structured way to identify or examine components separated by gas chromatography and then characterized by infrared detection. By defining general techniques, the standard supports more consistent analytical work, better comparability, and clearer technical communication across testing workflows.

What is ASTM E1642?

ASTM E1642, titled Standard Practice for General Techniques of Gas Chromatography Infrared (GC/IR) Analysis, is a practice standard focused on the broad approach to GC/IR analysis rather than a narrow test on one material. It is commonly used as a technical guide for combining chromatographic separation with infrared characterization. As an ASTM standard, it helps laboratories follow a recognized method framework when applying GC/IR techniques in analytical evaluation and reporting.

Where is ASTM E1642 used?

This standard is typically used in laboratories that perform GC/IR analysis for component identification and related analytical tasks. It is most relevant in workflows where gas chromatography is paired with infrared detection to examine separated compounds, compare results, or support investigation of unknowns. ASTM E1642 may be used by analytical labs, quality control teams, and technical groups that rely on standardized GC/IR practices for consistent interpretation and documentation.

Why is ASTM E1642 important?

ASTM E1642 matters because it helps bring consistency to a specialized analytical technique that depends on both separation and spectral characterization. Using a recognized ASTM practice can support more reliable results, easier method communication, and better confidence in laboratory decisions. It is also useful for procurement, compliance, and quality programs that need a stable reference for GC/IR analysis. In practice, ASTM E1642 can help reduce ambiguity and improve repeatability in technical evaluation.

• GC/IR general practice guidance
• Chromatographic separation followed by IR characterization
• Analytical laboratory workflow support
• Consistent technical reporting and comparison