Use these GS-Tek resources to narrow GC column directions by standard method, USP phase, ASTM method, application sample, or basic column selection principle.
Important: These tables are selection starting points. For regulated methods, confirm suitability against your method, analyte list, sample matrix, instrument configuration, and laboratory validation requirements.
Selection Principles
Start with phase polarity, film thickness, PLOT chemistry, ID, length, and sample loading.
USP Phase Selection
Browse 25 USP phase rows and GS-Tek phase recommendations.
EPA Method Selection
Browse 21 EPA environmental method rows by analyte, matrix, detector, and column direction.
ASTM Method Selection
Browse 61 ASTM method rows for petrochemical, fuel, gas, and related GC applications.
Application-Based Selection
Browse 220 application rows by GS-Tek phase, equivalent phase, industry, and sample type.
How to Use These Tables
- Use the USP table when the method specifies a USP stationary phase category.
- Use the EPA and ASTM tables when the method or standard number is the main selection driver.
- Use the application table when you know the sample type, industry, or equivalent phase.
- Send the current part number, target analytes, instrument model, and quantity when requesting quote or method support.