What sample volumes are required for an accurate reading?

For continuous mode, we recommend a minimum of 600 mL for a sample. For GC Emulation Mode, the minimum sample volume is 15 mL, but this mode is not as sensitive to low levels of ethylene. The lower detection limit of the F-900 is 40 ppb, or 0.040 ppm when used in Continuous Monitoring Mode. In GC Emulation Mode, the lower detection limit is 0.800 ppm with a range of 0.800 ppm to 20 ppm.