by Dr. Yashashwini Reddy | Apr 19, 2025
1. What is a pH meter and how does it work? A pH meter is an electronic device used to measure the hydrogen-ion activity (acidity or alkalinity) in a solution. It works by measuring the voltage difference between a pH-sensitive electrode (glass electrode) and a...
by Dr. Yashashwini Reddy | Apr 19, 2025
A Particle Size Analyzer is an instrument used to measure the size distribution of particles in a sample. These analysers are essential in a variety of industries like pharmaceuticals, mining, food, cosmetics, and chemicals, where particle size can significantly...
by Dr. Yashashwini Reddy | Apr 17, 2025
1. What is osmometry, and what is it used for? Osmometry is a technique used to measure the osmolality of a solution — the concentration of osmotically active particles per kilogram of solvent. It’s commonly used in clinical laboratories to assess body fluid...
by Dr. Yashashwini Reddy | Apr 17, 2025
1. What is LCMS and how does it work? Explanation: This is a foundational question. LCMS combines liquid chromatography (LC) for separating compounds and mass spectrometry (MS) for detecting and identifying them based on mass-to-charge ratio (m/z). It is widely used...
by Dr. Yashashwini Reddy | Apr 16, 2025
1. What are the different types of HPLC columns? Reversed-phase columns: These are the most commonly used, where the stationary phase is nonpolar (e.g., C18). Polar compounds are retained longer. Normal-phase columns: The stationary phase is polar, while the mobile...
