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Quality Control

January 22, 2026

UV–Visible Spectrophotometer Calibration SOP: Procedures, Acceptance Criteria, Performance Tests & FAQs

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - January 22, 2026

UV–Visible spectrophotometer calibration procedure for QC labs including wavelength verification, absorbance accuracy, stray light, resolution power, and compliance.

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January 22, 2026

Karl Fischer (KF) Apparatus Calibration: How To Perform Quickly

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - January 22, 2026

Karl Fischer (KF) apparatus calibration ensures accurate moisture determination by titrating water standards, calculating the KF factor, and meeting GMP compliance.

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January 22, 2026

Gas Chromatography (GC) Calibration: Parameters, Procedures, Frequency, and 15+ FAQs

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - January 22, 2026

earn Gas Chromatography (GC) calibration including parameters, step-by-step procedures, frequency, acceptance criteria, detector precision, linearity, and FAQs for accurate and compliant GC analysis.

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January 22, 2026

HPLC Calibration (High-Performance Liquid Chromatography Calibration) : Key Parameters, Procedure, Frequency, Case Study, and 9+FAQs

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - January 22, 2026

HPLC calibration ensures accurate, precise, and reliable results by verifying pump, injector, detector, autosampler, and gradient system performance within acceptance criteria.

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January 22, 2026

How to Perform UPLC Calibration: Parameters, Frequency, Procedure, Case Study & 11 FAQs

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - January 22, 2026

Learn UPLC calibration step-by-step procedures, key parameters, frequency, delay volume, detector and pump calibration, quaternary gradient testing, and FAQs.

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January 22, 2026

FTIR Spectrophotometer Calibration: Procedure, Wavenumber Verification, Resolution, Frequency, And FAQs

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - January 22, 2026

Learn FTIR spectrophotometer calibration with step-by-step procedure, wavenumber verification, resolution checks, frequency, acceptance criteria, and FAQs.

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January 21, 2026

Analytical Balance Performance Verification: Procedure, Tests & Acceptance Criteria

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - January 21, 2026

Analytical balance performance verification ensures accurate weighing through checks of accuracy, repeatability, linearity, and drift using certified weights.

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January 21, 2026

Pharmaceutical Companies Explained: Types, Departments, Careers, Top Companies & FAQs

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - January 21, 2026

Introduction & Learning Outcome: Basic Knowledge of Pharmaceutical Companies Pharmaceutical companies play a vital role in our daily lives by discovering, developing, manufacturing, and supplying medicines that improve and save human lives. The pharmaceutical industry encompasses research and development, manufacturing processes, quality control, quality assurance, safety, regulatory compliance, and marketing strategies involved in producing pharmaceutical […]

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January 19, 2026

Sterility Test: Top 20+ Interview Questions and Answers

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - January 19, 2026

Top sterility test interview questions with clear answers. Learn methods, media, incubation period, regulations, and troubleshooting in pharmaceuticals.

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January 19, 2026

Total Organic Carbon (TOC) Analyser: Top 21 Interview Questions and Answers

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - January 19, 2026

Learn TOC Analyzer basics with 21 interview questions—principle, oxidation methods, applications, calibration, and regulatory requirements.

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January 19, 2026

Top 27+ Dissolution Test Interview Questions With Answers | USP & GMP Guide

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - January 19, 2026

Learn dissolution test interview questions with answers. Understand USP dissolution apparatus, acceptance criteria, sink conditions, and validation in pharma.

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January 19, 2026

Structural Elucidation In Pharmaceuticals: Definition, Key Steps, Case Study & 11 FAQs

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - January 19, 2026

Learn structural elucidation in pharmaceuticals using NMR, LC-MS, IR & XRD. Covers definition, key steps, case study, and 11 FAQs.

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January 19, 2026

Content Test in Pharmaceutical Analysis | Case Study & FAQs

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - January 19, 2026

Learn what content test in pharmaceutical analysis is, why it’s required, analytical methods used, real case studies, and 5 FAQs.

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January 19, 2026

Pharmaceutical Raw Materials: Definition, Specification Development, And Their Impact On API Quality

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - January 19, 2026

Learn what pharmaceutical raw materials are, how their specifications are decided, and how they impact API quality with a real-world case study.

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January 19, 2026

Pharmaceutical Water: Types, Specifications, Testing Parameters, Preparation & Regulatory Guidelines (FAQs)

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - January 19, 2026

Pharmaceutical water explained with types, specifications, testing parameters, preparation methods, regulatory guidelines, and FAQs.

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January 19, 2026

Distilled Water vs Deionised Water: Key Differences, Applications, and 11+ FAQs

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - January 19, 2026

Distilled water vs deionised water explained with key differences, applications, purification methods, and FAQs for lab and industrial use.

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January 14, 2026

Pharmaceutical Reference Standards: Primary Reference Standards, Secondary Working Standards & Applications (15 FAQs)

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - January 14, 2026

Learn about Pharmaceutical Reference Standards (PRS), including primary & secondary standards, applications, pharmacopeial sources, importance, and 15 FAQs for pharma professionals.

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January 13, 2026

How to Avoid Analytical Errors in Pharmaceutical analysis: Easy 5-Minute Learning with FAQs & Case Study

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - January 13, 2026

Learn how to avoid analytical errors in pharmaceutical analysis with simple explanations, error types, prevention methods, FAQs, and a real QC case study.

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January 11, 2026

Thermogravimetric Analysis (TGA) in Drug Development: Learn Easily with 7 FAQs and 3 Case Studies

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - January 11, 2026

Learn Thermogravimetric Analysis (TGA) in drug development with simple explanations, key principles, applications, FAQs, and real case studies.

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January 10, 2026

Interview Questions on Humidity and Relative Humidity in Pharmaceuticals (QA, QC, Production & Validation)

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - January 10, 2026

Top interview questions on humidity and relative humidity in the pharmaceutical industry. Understand GMP requirements, RH limits, stability studies, and cleanroom control

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Pharmaceutical Analysis in QC and ADL | Complete Guide to QMS, Calibration, Documentation, Troubleshooting & Analytical Techniques (HPLC, GC, MS, NMR, XRD, TLC, Titration, Spectroscopy)
January 9, 2026

Pharmaceutical Analysis in QC and ADL | Complete Guide to QMS, Calibration, Documentation, Troubleshooting & Analytical Techniques (HPLC, GC, MS, NMR, XRD, TLC, Titration, Spectroscopy)

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - January 9, 2026

Explore a complete guide to Pharmaceutical Analysis in QC and ADL, covering QMS, calibration, documentation, troubleshooting, and key analytical techniques like HPLC, GC, MS, NMR, XRD, TLC, titration, and spectroscopy.

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November 11, 2025

Cleaning Validation And Validation: Key Differences With FAQs

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - November 11, 2025

Both cleaning validation and validation are essential for ensuring the quality, safety, and efficacy of pharmaceutical products. Cleaning validation is a documented, scientific approach that demonstrates a cleaning process consistently removes residues to acceptable levels, proving the effectiveness of the procedure. In contrast, cleaning verification is a routine check—such as visual inspection or surface testing—to […]

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October 26, 2025

Top 10 Audit-Ready Practices for Every QA & QC Professional

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - October 26, 2025

Discover the top 10 audit-ready practices for QA and QC professionals in the pharmaceutical industry. Learn how ALCOA+, CAPA, change control, and document management ensure GMP compliance and inspection readiness.

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October 21, 2025

Human Errors In Pharmaceutical analysis: How to identify and minimize

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - October 21, 2025

Human error in pharmaceutical analysis refers to personnel mistakes that can compromise product quality, patient safety, and regulatory compliance. These errors usually arise from systemic factors—such as unclear procedures, poor communication, insufficient training, or equipment issues—rather than individual fault alone. Human Error Case Study: Real-Life Incident from a Pharmaceutical Laboratory Background Early in my career, […]

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Quality Control (QC) Vs Quality Assurance (QA): Interview Questions
October 21, 2025

Quality Control (QC) Vs Quality Assurance (QA): Interview Questions

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - October 21, 2025

Quality Control (QC) is a product-focused and reactive approach that involves inspecting, testing, and measuring finished products to identify and correct defects after production. In contrast, Quality Assurance (QA) is a process-focused and proactive approach that aims to prevent defects by developing and implementing quality standards throughout the entire product lifecycle. In essence, QA builds […]

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October 17, 2025

MACO Calculation In Pharmaceuticals: Learn With 3+ Case Studies and 7+FAQs

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - October 17, 2025

The MACO calculation, or the Maximum Allowable Carryover calculation in pharmaceutical manufacturing, determines the maximum residue from a previous product that can remain on shared equipment without risking contamination or harm to the next product or patient. It is essential for cleaning validation to ensure effective cleaning and prevent cross-contamination. FAQs on MACO Calculation ​ […]

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October 9, 2025

Control Samples Or Retention Samples or Reference Samples in Pharmaceuticals: Learn With 5+ FAQs

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - October 9, 2025

Control Samples Or Retention Samples or Reference Samples are reference materials with known properties used to verify the accuracy and reliability of tests, serving as benchmarks to ensure consistent, acceptable results. These samples play a critical role in post-market surveillance, regulatory compliance, and the investigation of complaints. In this article, I will discuss the definition, […]

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October 7, 2025

Process Validation vs. Product Validation in Pharmaceuticals: Get Mastery In 3 minutes

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - October 7, 2025

Process validation and product validation are distinct yet complementary activities essential to ensuring quality in pharmaceutical manufacturing. Process validation confirms that the manufacturing process consistently yields products meeting predefined specifications, while product validation verifies that the final product meets its intended use and quality requirements. In pharmaceutical development, both the drug and its manufacturing process […]

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September 8, 2025

19+ Top Pharma Quality Control (QC) Interview Questions and Answers

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - September 8, 2025

9+ Top Pharma Quality Control (QC) Interview Questions and Answers

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August 21, 2025

How to Read A Chromatogram In HPLC and GC: Peak, RT (Retention Time) and RRT

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - August 21, 2025

How to Read a Chromatogram is one of the fundamental skills to proceed with the HPLC and GC analysis. A chromatogram is interpreted by analysing the axes, identifying the peaks, and evaluating their characteristics such as Retention Time, Peak Shape, Peak Height and Area. In this article, I will explain how to read and interpret chromatograms, […]

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July 25, 2025

Process Validation In Pharmaceutical: Principles, Types, Case Studies And FAQs

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - July 25, 2025

Learn about process validation in the pharmaceutical industry, its principles, types, and key case studies. Understand its importance for ensuring product quality, regulatory compliance, and patient safety.

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July 9, 2025

Key Difference Between GMP and cGMP: Learn Easily In 5 Minutes With FAQs

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - July 9, 2025

The key difference between GMP and cGMP is that GMP (Good Manufacturing Practices) refers to established guidelines for manufacturing quality products, while cGMP (current Good Manufacturing Practices) emphasises the ongoing implementation of up-to-date technologies, practices, and regulations to ensure product quality and compliance with evolving industry standards. In this blog, I will discuss the key […]

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June 27, 2025

DQ, IQ, OQ, And PQ: Concept, Applications and FAQs

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - June 27, 2025

Learn DQ, IQ, OQ, And PQ: Concept with applications, case studies and FAQs

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June 24, 2025

What is Qualification In Pharma and How It Differs From Validation

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - June 24, 2025

Learn the key difference between validation and qualification in pharmaceutical manufacturing and why both are essential for GMP compliance and product quality.

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June 18, 2025

What Is Limit Test And Why It Is Important In Pharmaceutical Analysis

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - June 18, 2025

Learn what Is limit test and why It Is important in pharmaceutical analysis with FAQs

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June 18, 2025

Monograph And Standard Test Procedure (STP): Key Differences Everyone Must Know in 2025

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - June 18, 2025

Learn about monographs and standard testing procedures (STP), key differences, writing process, and benefits with FAQs.

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June 17, 2025

Pharmaceuticals Certificate Of Analysis (COA): Content, Preperation and Approval

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - June 17, 2025

Learn about Pharmaceuticals Certificate of Analysis its content, preparation and approval with FAQS

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June 9, 2025

Protected: Gas Chromatography (GC) in Drug Development: Techniques, Case Studies, and Expert Tips

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - June 9, 2025

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HPLC in Pharmaceutical Development: Principles, Benefits, Case Studies & Expert FAQs
June 9, 2025

HPLC in Pharmaceutical Development: Principles, Benefits, Case Studies & Expert FAQs

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - June 9, 2025

HPLC (High-Performance Liquid Chromatography) is a chromatographic technique that employs a solid stationary phase and a liquid mobile phase to efficiently separate, identify, and quantify components within a sample or complex mixture The term “chromatography” refers to the general process of separation, while a “chromatograph” is the instrument used, and a “chromatogram” is the visual […]

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June 8, 2025

Sulphated Ash Test (Residue on Ignition Test) In Pharmaceuticals: Why & How

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - June 8, 2025

Sulphated Ash Test In Pharmaceutical Analysis: Why, How, And At What level , procedure, calculation, case studies and FAqs

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June 8, 2025

Loss On drying Test (LOD Test) of Pharmaceuticals: Why, How and At what level

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - June 8, 2025

Learn about Loss on Drying test, purpose, procedure, acceptable limits , case studies and FAQs

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June 8, 2025

Headspace Gas Chromatography (GCHS): Learn Residual Solvents/OVI Analysis In 7 Minutes

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - June 8, 2025

Learn how Headspace Gas Chromatography improves pharmaceutical quality by managing OVIs. Includes GC-HS principles, method development, applications, advantages, and FAQs

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June 3, 2025

ppm, mcg and percentage (%) In Pharmaceutical Analysis: 5 Minutes Quick Learning

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - June 3, 2025

ppm, mcg and percentage are the units of measurement and play a crucial role in pharmaceutical development. In both synthetic and analytical chemistry, precise measurements are key to accurate sample preparation and analysis. Among the most frequently used units in this process are ppm, mcg/µg, and % – terms that, while common, often lead to […]

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May 27, 2025

Peak Integration In HPLC: How to Avoid Errors and Ensure Accuracy

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - May 27, 2025

Learn the essentials of peak integration in chromatographic analysis, including integration types, common errors, influencing factors, and practical tips to avoid mistakes.

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What is Pharmaceuticals Assay: Learn In 7 Minutes
February 11, 2025

What is Pharmaceuticals Assay: Learn In 7 Minutes

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - February 11, 2025

Learn the importance of assay in pharmaceutical development. Discover how assays ensure drug quality, safety, and efficacy, and explore the steps and precautions involved in performing them

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CSV (Computer System Validation): Get Mastery in 12 Easy Steps
January 26, 2025

CSV (Computer System Validation): Get Mastery in 12 Easy Steps

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - January 26, 2025

Learn CSV (computer system validation) with our 12-step ultimate guide to enhance efficiency in pharmaceutical data management.

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How  (KF) Karl Fischer Coulometric Titration Measures Water Content: Learn In 5 Minutes
January 16, 2025

How (KF) Karl Fischer Coulometric Titration Measures Water Content: Learn In 5 Minutes

  • Avatar of Dr Pramod Kumar Pandey
  • By Dr Pramod Kumar Pandey - January 16, 2025

Explore Karl Fischer coulometric titration for precise water measurement at a very low level in drug development processes. Essential for pharma success.

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