Observing Microorganism (B)

Part 2 – STAINING Microorganisms are observed and studied with the help of microscopes. However the bacteria have nearly the same refractive index as water, which makes them visually opaque. Hence, the microbial cells are routinely stained for clear microscopic examination. Staining is thus an auxiliary technique used in microscopy and microbiology to enhance contrast in the microscopic images […]

Observing Microorganism (A)

Part 1 – Microscopy Microbiology deals with the study of microorganisms that cannot be seen distinctly with the unaided eye. Considering the nature of the objects to be studied, the microscope becomes an instrument of paramount importance. Modern microscopes produce images with great clarity, magnifications that range from ten to thousands of times. Compound Light […]

Introduction to Microbiology

Microbiology is the study of microscopic living organisms, the microbes that are usually too small to be seen with the unaided eye. Microorganisms are extremely diverse and ubiquitous in nature. Microbiology deals with the study of distribution of microorganisms in nature, their unique metabolic characteristics, their relationship with each other and with other organisms, their […]

Preservative Efficacy Test

Preservative efficacy test is performed to determine the type and minimum effective concentration of preservative required for satisfactory preservation of  pharmaceuticals, food and biotechnology products. The preservative to be effective in the final packaged product should be considerably below the concentrations of the preservative that may be toxic to human beings. The Preservative efficacy test […]