GC Column Flow Rate / Linear Velocity Calculator

Estimate carrier gas average linear velocity and volumetric flow rate for a GC column.

Column length (m)

Column internal diameter (mm)

Retention time of an unretained peak, t_M (min)

This is a simplified estimate (velocity = column length ÷ t_M; flow = velocity × column cross-sectional area) that ignores carrier gas compressibility. For precise method development, use your GC instrument's flow calculator.

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