by maheshbhuva | Oct 9, 2026 | Analytical Chemistry, Pharmaceutical interview,, Quality control (QC)
Leveling Effect: Very weak basic drugs (e.g., diazepam, chlorpheniramine, ciprofloxacin) cannot be reliably titrated in water because water behaves as a stronger base than the analyte, causing poorly defined endpoints.Glacial Acetic Acid as Solvent: Glacial acetic... by maheshbhuva | Sep 19, 2026 | Analytical Chemistry, Out of specification, Pharmaceutical interview,, QMS, Quality control (QC)
Answer Framework: Phase I (Laboratory Investigation): Verify that the analyst followed standard test methods, instrument parameters were within calibration, solutions/standards were valid, and chromatograms/system suitability met criteria. ​Phase II (Manufacturing /... by maheshbhuva | Jun 15, 2026 | Analytical Chemistry, Documents error (DIN), Out of specification, Pharmaceutical interview,, QMS, Quality control (QC)
RCA (ROOT CAUSE ANALYSIS) IN PHARMACEUTICAL INDUSTRIES AS PER REGULATORY REQUIREMENTS 1. PROBLEM IDENTIFICATION What Happens Clearly define the deviation, OOS, OOT, complaint, breakdown, audit observation, or incident. Includes Deviation description Date & time... by maheshbhuva | May 28, 2026 | 483 observation, ALCOA++, Analytical method development hplc,, Hplc, Job interview, News Pharma, Pharmaceutical interview,
STEP-BY-STEP PROCEDURE 1. PURPOSE To describe the steps for initiation, investigation, implementation, effectiveness check and closure of Corrective and Preventive Actions (CAPA) in QMS to ensure product quality and compliance with regulatory requirements. 2. SCOPE... by maheshbhuva | May 20, 2026 | Analytical Chemistry, Out of specification, Pharmaceutical interview,, Quality control (QC)
Can we average an OOS result with passing retest results to get a passing average? A: Absolutely not. Both FDA and MHRA guidelines strictly prohibit averaging an OOS result with passing retests to “hide” the failure or bring the batch into compliance.... by maheshbhuva | May 19, 2026 | Analytical Chemistry, Documents error (DIN), GMP, ICH Guideline, Out of specification, Pharmaceutical interview,, QMS, Quality control (QC)
An Out of Specification (OOS) investigation is a critical regulatory requirement in the pharmaceutical industry. When an analytical result falls outside the established specifications or acceptance criteria (defined in pharmacopoeias, drug applications, or internal...