Column Chromatography Mastery: From Packing to Protein A

What you'll be able to do

• Diagnose bad peak shape and trace it back to a specific column packing defect
• Calculate and interpret HETP and asymmetry factor to judge column efficiency before running a real sample
• Explain why skipping column equilibration ruins a run, and set up equilibration correctly every time
• Explain the mechanism behind Protein A chromatography and answer 'why is it so powerful' confidently in an interview

What's inside

5 modules, in order, from the first step to the finished result.

• 01

  Column Packing Fundamentals & Diagnosing Bad Peak Shape

  Learn what a well-packed column looks like on paper vs. in a chromatogram, and how to read peak shape to catch packing errors.

  Signs of a poorly packed columnTailing vs fronting peaks and their causesVoid formation and channelingQuick visual checks before a run
• 02

  HETP & Asymmetry: Measuring Column Efficiency

  Break down how to calculate HETP and asymmetry factor from a real chromatogram and what the numbers tell you about column health.

  Theoretical plate theory in plain termsStep-by-step HETP calculationReading asymmetry factor thresholdsWhen a column needs repacking vs. re-equilibration
• 03

  Column Equilibration: Why It's Non-Negotiable

  Walk through what equilibration actually does chemically and what happens to your run when you skip or rush it.

  Buffer exchange at the column levelBaseline drift as an equilibration red flagMinimum equilibration volumes (column volumes rule of thumb)Common shortcuts that backfire
• 04

  Protein A Chromatography: Mechanism & Industry Relevance

  Explain the binding mechanism that makes Protein A chromatography the industry standard for antibody purification, and how to discuss it in interviews.

  Fc-region binding specificityWhy Protein A outperforms generic affinity methodsElution conditions and pH considerationsCommon interview questions on Protein A
• 05

  Putting It Together: Practice Problems & Interview Readiness

  Work through mixed practice problems combining packing diagnosis, HETP, equilibration, and Protein A concepts to simulate exam and interview scenarios.

  Scenario-based troubleshootingConnecting theory to real chromatogram readoutsFraming answers for technical interviewsSelf-check before the completion quiz