HPLC/UPLC column chemistry, peak fronting/tailing troubleshooting, ICH Q3D elemental impurities, Karl Fischer titration, and SST limits.

Minor/Major/Critical deviation handling, 5-Whys & Fishbone RCA, CAPA effectiveness, Change Controls, APQR (Cpk), and Cleaning Validation MAC.

Wet vs Dry granulation (RMG vs Roller Compaction), FBD drying kinetics, tablet compression defects (capping, lamination), and tablet coating.

EU Annex 1 Contamination Control Strategy, Grade A/B aseptic processing, Media Fill simulation limits, BFS technology, and Lyophilization cycles.

Agitated Nutsche Filter Dryers (ANFD), centrifuge operations, crystallization kinetics, solvent recovery, and high-potency API containment (OEB).

Parent-child packaging aggregation (Levels 1-4), 2D DataMatrix track & trace, Alu-Alu vs PVC blister sealing, and leak detection testing.

Bacterial Endotoxin Testing (BET/LAL), gel-clot vs chromogenic techniques, environmental monitoring, settle plates, and cleanroom air classifications.

Type II/III/IV/V Drug Master Files (DMF), eCTD Modules 1 to 5, CBE-30, PAS, Type IA/IB/II variation filings, and regulatory deficiency replies.

BCS Classes I-IV criteria, Biowaivers under ICH M9, Quality by Design (QbD), solubility enhancement (SEDDS, solid dispersions), and scale-up.

ICH Q2(R2) method validation, specificity vs selectivity, Forced Degradation stress studies, peak purity indices, and mass spectrometry (LC-MS).

Expedited safety reporting timelines (7-day / 15-day SUSAR), 4 minimum criteria of valid ICSRs under ICH E2D, MedDRA coding, and PSUR schedules.

Retest Date vs Expiration Date, FEFO dispensing protocol, cold-chain storage management (2-8°C), sampling booth airflow, and GDP records.

PAO / DOP HEPA filter leak testing (0.01% penetration limit), cleanroom pressure differentials, WFI generation, and clean steam qualification.

Occupational Exposure Bands (OEB 1-5), OEL thresholds, solvent flashpoints, chemical spill containment, PPE matrices, and fire protection systems.

Explaining career gaps, handling department switches (QC to QA), shift readiness, salary expectations, and behavioral interview screening.