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
What are plasmids? Copy Number and Physical Nature of Plasmids Properties of Plasmids Plasmid Replication Mechanism 1. Rolling circle Mode of Replication Rolling-Circle Replication (RCR) is described as a method of DNA replication that is used by some viruses, plasmids and circular genetic elements. A single-strand nick is introduced at the origin and the 5′-end … Read more
Microorganisms are everywhere in their the distribution. In any given environment, many microorganisms are present at any given time. It is difficult to identify a specific kind of microbe until we understand their ecological needs. For instance, anaerobic microbes do not require oxygen those that are aerobic require oxygen micro-aerophiles to have oxygen however, in a small amount. So, we require cotton plugs to provide an conditions that are aerobic and keep the growing culture uninvolved with unwanted microbes. Cotton plugs are made of cotton along with air pours. Air can flow through air pours, but not the bacteria that cause microbial contamination. They are fixed to the surface of cotton fibres , and prevent them from being able from getting into flasks, tubes, etc. Air aids in for the development of microorganisms within glass equipment.
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
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