Dynamic Binding Capacity (DBC) Calculator

Determine chromatography resin dynamic binding capacity at 5% and 10% breakthrough (DBC10%), residence time, and purification productivity.

Column & Breakthrough Parameters

Packed Bed Volume Vc (mL):

Feed Protein Conc C₀ (mg/mL):

Breakthrough Vol V_10% (mL): Volume fed at C/C₀ = 10%

System Void Volume V₀ (mL): Tubing, mixer & inter-particle void

Volumetric Loading Flow (mL/min):

Safety Operating Safety Factor (%): Typically 70-85% of DBC10%

Resin Capacity & Performance

DBC₁₀% (Dynamic Capacity):

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Safe Working Capacity:

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Residence Time (min):

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Breakthrough Column Volumes:

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Total Mass Bound at Breakthrough:

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Frequently Asked Questions

What is Dynamic Binding Capacity (DBC)?

DBC is the amount of target molecule that binds to a chromatography resin under active hydrodynamic flow before significant breakthrough (typically 5% or 10% of inlet feed concentration) occurs.

Why is Residence Time critical for DBC?

Protein mass transfer into porous resin beads is diffusion-limited. Increasing residence time (e.g., from 2 to 6 minutes) increases DBC until reaching the static equilibrium capacity.

Why subtract the void volume V₀?

Void volume accounts for liquid holdup in upstream tubing and column interstitial volume before the feed front actually passes through the resin bed.