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.
Pipetting Definition Pipetting is the process of using a pipettor to measure and dispense small volumes of liquid. It is a fundamental technique used in many laboratory procedures, including preparing solutions, dispensing samples for analysis, and performing various types of assays. When pipetting, the user first sets the desired volume on the pipettor by adjusting
What is Ergonomic Pipetting? Ergonomic pipetting is the design and use of laboratory pipettes in a way that reduces the risk of injury or strain to the hands and wrists of the user. Pipetting is a repetitive task that, if not done properly, can lead to discomfort and even injury over time. Ergonomic pipetting involves
Positive displacement pipettes are characterised by piston-driven displacement. The piston in a positive displacement pipette makes direct contact with the sample, which allows the aspiration force to remain constant. Air displacement pipettes accurately dispense the majority of liquids. However, the precision may be affected negatively by the solution’s viscosity, volatility, surface tension, and temperature. For
An air displacement pipette (also known as a “volumetric pipette” or “mechanical pipette”) is a type of liquid handling tool commonly used in laboratory settings. It uses air displacement to draw a specific volume of liquid into the pipette’s barrel. The volume of liquid is determined by the calibrated volume markings on the barrel of
Standard laboratory equipment for measuring and transferring minute amounts of liquid includes micropipettors. You’ll put them to use all through the semester and into subsequent upper-level courses. If you want reliable results from your tests, you must become an expert user of these tools. Objective Parts of a micropipette Different sizes of micropipettes The laboratory’s
A dry mount slide is the simplest type of slide preparation in microscopy. It is the process in which a dry specimen is placed directly on the clean glass slide without using any liquid medium. It is the air that remains between the specimen and the objective lens, and the refractive index of air is
Microinjection is a direct method for delivering DNA and other materials into cells. Explore its principle, equipment, procedure, applications and limitations.
Filtration is a physical separation process in which a liquid or gas is passed through a filter medium to separate certain suspended particles from the fluid. The filter medium allows the fluid to pass through it while retaining the particles. It is commonly used for the separation of heterogeneous mixtures, especially suspensions containing insoluble solid
