Top 21+ NMR Interview Questions and Answers For R&D, Analytical, QC, QA, And RA Roles
NMR Interview Questions and Answers For R&D, Analytical, QC, QA, And RA Roles NMR interview questions typically cover both technical knowledge and soft skills. On the technical side, candidates may be asked about the principles of NMR, interpretation of spectra—such as chemical shift, spin–spin coupling, and multiplicity—along with the advantages, limitations, and applications of various […]
Interview FAQs On FTIR And Uv Visible Spectrophotometer
Interview FAQs On FTIR And Uv Visible Spectrophotometer UV-visible and IR spectroscopy are widely used tools in pharmaceutical development for both qualitative and quantitative analysis. This is the reason why most of the questions are asked about these topics in pharmaceutical analytical or QC interviews. In this post, I will discuss all the questions asked […]
Top Interview Questions and Answers On Titration: For Analytical, QC, QA, R&D and RA Roles
Top titration interview questions often focus on the fundamentals, such as defining titration, distinguishing between the equivalence point and the end point, and explaining various titration types—including acid–base, redox, and complexometric methods. Candidates may also be asked about the principles behind specialised techniques like Karl Fischer titration, common sources of analytical error, and key concentration […]
Top 69+ GC Interview Questions and Answers For Analytical, QC, QA, R&D and RA Roles
Chromatography interviews typically focus on core principles, instrument components, and practical applications, along with essential skills such as method validation and troubleshooting. You can expect questions on separation mechanisms, the roles of the mobile and stationary phases, column types, detector principles, common system issues, and the advantages of GC. Gas Chromatography (GC) is widely used […]
Top 51+ HPLC Interview Questions and Answers For Analytical, QC, QA, R&D and RA Roles
Common HPLC interview questions typically focus on fundamental concepts such as the principle of HPLC, its instrumentation, column chemistry, and mobile-phase selection. Candidates are often tested on method development, system suitability parameters, and troubleshooting skills. You should be familiar with topics like retention time, normal-phase vs. reverse-phase chromatography, isocratic vs. gradient elution, and common issues […]
HPLC Method Adjustment Limits: What’s Allowed | FAQs and Case Studies
HPLC method adjustment is necessary to ensure accurate pharmaceutical analysis, since factors such as analytical errors and environmental conditions can cause changes in retention time (RT), relative retention time (RRT), or peak shape. According to the standard test procedure (STP), analysis can not be initiated if the HPLC system fails in the system suitability test. […]
GC Method Adjustment Limits: What’s Allowed | FAQs and Case Studies
GC method adjustment is often necessary during routine pharmaceutical analysis to achieve acceptable system suitability criteria and prevent failures caused by analytical errors. Analysis can not begin if the GC system fails in the system suitability test as per the standard testing procedure (STP). Now the question is, why does the GC system fail in […]
Chromatographic Techniques vs Traditional Techniques: Key Differences in 5 Minutes (With Case Studies & FAQs)
Chromatographic techniques are the backbone of pharmaceutical development. Pharmaceuticals development is impossible without the use of chromatographic techniques. However, most of the chemists don’t know why chromatographic techniques are widely used in pharma industries. That is why I decided to share my skill-based knowledge on ” Need for Chromatographic techniques”. Having read this article all […]
Fast and Easy HPLC Column Equilibration Tips: Learn in 5 Minutes (With Case Studies & FAQs)
HPLC column equilibration is the process of stabilising the column by fully saturating the stationary phase with the mobile phase, ensuring consistent backpressure, retention time stability, and a smooth baseline before injecting any sample. This is typically achieved by flushing the column with the mobile phase for a defined period—often around 60 minutes or at […]
How To Determine Water by Karl Fischer (KF) Titration and How It Differs From LOD Testing
Learn everything about Karl Fischer titration for water determination in pharmaceuticals, food, and cosmetics. Explore its principle, procedure, reagents, reactions, applications, case studies, and FAQs.