GC Column. RTX-502.2 75M x 0.45mm ID x 2.55um RTX-502.2 Fused Silica proprietary crossbond diphenyl/dimethyl polysiloxane phase Application-specific columns with unique selectivity for volatile organic pollutants. The Rtx-502.2 column is cited in U.S. EPA Method 502.2 and in many gasoline range organics (GRO) methods for monitoring underground storage tanks. Excellent separation of trihalomethanes; ideal polarity for light hydrocarbons and aromatics. Temperature Range: Stable to 270 °C. Similar Phase(s):DB-502.2