pH Meter – Principle, Parts, Working, Procedure, Types, Applications, Advantages & Precautions
A pH meter is a modern electronic device that measures hydrogen ion concentration in a solution and displays it directly as a pH value.
biology
Laminar Flow Hood / Cabinet – Principle, Types, Parts, Procedure, Applications & Precautions
A Laminar Flow Hood (also called Laminar Flow Cabinet) is a special enclosed workstation designed to maintain a contamination-free environment in laboratories.
Agarose Gel Electrophoresis – Principle, Procedure, Applications, Advantages & Limitations
Agarose Gel Electrophoresis is one of the most widely used techniques in molecular biology, genetics, and biochemistry. It plays a central role in DNA and RNA analysis, genetic fingerprinting, and even in medical diagnostics. This method allows scientists to separate and visualize nucleic acids (DNA and RNA) based on their size and charge.
Instruments Used in Microbiology Laboratory – Principles, Uses, and Applications
Learn about the major instruments used in microbiology labs, including their principles, working, and applications. Covers autoclave, microscope, centrifuge, spectrophotometer, incubator, pH meter, laminar hood, and more.
Ion Exchange Chromatography – Principle, Instrumentation, Procedure, Applications
Ion Exchange Chromatography is a powerful separation technique based on charge differences of molecules. Learn the principle, types of exchangers, instrumentation, working steps, applications, advantages, and limitations of ion exchange chromatography.
Null Hypothesis and Alternative Hypothesis – Definition, Examples & Differences
Learn the difference between null hypothesis and alternative hypothesis with definitions, symbols, examples, importance, and applications in biology research.
High-Performance Liquid Chromatography (HPLC) – Principle, Instrumentation, Types & Applications
High-Performance Liquid Chromatography (HPLC) is one of the most powerful and widely used techniques in modern laboratories. It helps to separate, identify, and quantify different components of a mixture with high accuracy and efficiency.
Questionnaire Method of Data Collection – Definition, Features, Types, Advantages & Limitations
A questionnaire is a structured set of questions designed to gather specific information from individuals or groups. It can be used in field surveys, experiments, population studies, and public opinion research. In biology-related research, questionnaires can be used to collect data on public awareness of conservation, health behaviors in communities, or local biodiversity knowledge.
Mass Spectrometry – Principle, Steps, Instrumentation, Types & Applications
Mass Spectrometry (MS) is a highly precise analytical technique used to identify and measure the amount of chemicals present in a sample. It works by ionizing molecules and separating them based on their mass-to-charge ratio (m/z).
Centrifugal Force and Centripetal Force – Definition, Differences, Principles, Examples & Applications
When an object moves in a circular path, two important forces come into play — centripetal force and centrifugal force. Centripetal force is a real force that pulls an object towards the center of its circular path. Centrifugal force is a fictitious (pseudo) force that seems to push an object outward, away from the center.