Sourav Pan
What is Nondisjunction? Types of Nondisjunction Causes of Nondisjunction Molecular Biology of Nondisjunction Consequences of Nondisjunction The nondisjunction is the failure when chromosomes don’t separate properly during cell division (like meiosis/mitosis), causing abnormal number of chromosomes in daughter cells. Such imbalance is termed as aneuploidy, sometimes loss of one (monosomy 2n–1) or gain of one … Read more
Membrane Filter Technique can define as a physical separation process, which based mainly on size / molecular weight of particles in a liquid or gas stream. In this method a thin semi-permeable membrane (often made from cellulose nitrate/acetate) is used, and pressure is applied to push the feed solution by it. The smaller components pass … Read more
Definition of Stage Micrometer A stage micrometer is a calibrated slide with a ruled scale used to calibrate microscopes and measure the size of objects under a microscope. Principle of Stage micrometer Parts of Stage micrometer Types of Stage Micrometer A. Based on Scale Design / Measurement Function B. Based on Physical Construction/ Traceability C. … Read more
Method of Calibrating a Microscope Importance of Microscope Calibration FAQ
Definition of Vortex Mixer A vortex mixer is a laboratory device that uses rapid circular oscillations to create a swirling motion, or vortex, in small volumes of liquid samples for efficient mixing and blending. Principle of Vortex Mixer Parts of Vortex Mixer Operating Procedure of Vortex Mixer To operate a vortex mixer, follow these steps: … Read more
Homogenizer Definition A homogenizer is a device used to mix, emulsify, and evenly distribute particles in liquids, creating a uniform and homogeneous mixture. Principle of Homogenizer Parts of Homogenizer 1. Homogenizing Valve – It is the main part where actual homogenization occur, the liquid is forced by a very small gap creating high velocity & … Read more
Definition of Incinerator An incinerator is a specialized furnace designed for burning potentially dangerous materials in a controlled manner, typically at high temperatures, to eliminate pollutants and safely dispose of waste. Working principle of Incinerator Operating procedure of Incinerator Parts of Incinerator Primary Chamber – It is the main combustion chamber where the waste materials … Read more
Definition of Hot Plate A hot plate is a portable heating device with a flat surface used to heat samples or materials in a controlled manner without the need for an open flame. Principle of Hot Plate The functional principle of a laboratory hot plate is that an electric current is passed through a heating … Read more
What is Laboratory Refrigerators and Freezers? Definition of Laboratory Refrigerators and Freezers Laboratory refrigerators and freezers are specialized equipment used in scientific and medical settings to store and preserve samples, specimens, vaccines, pharmaceuticals, and biological materials at specific temperatures. They ensure hygienic conditions, precise temperature control, and reliable performance to maintain the integrity and viability … Read more
A pipette is a fundamental laboratory instrument used across biology, chemistry and clinical labs to accurately measure and transfer small volumes of liquid. In this comprehensive guide we’ll explore what a pipette is, the working principle behind air-displacement vs positive-displacement pipettes, the key components of a pipette, the many types you’ll encounter (Pasteur, graduated, volumetric, … Read more
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