A serial dilution is the stepwise dilution of a substance in solution. Usually the dilution component at each step is regular, ensuing in a geometric development of the concentration in a logarithmic style. A ten-fold serial dilution might be 1 M, 0.1 M, zero.01 M, zero.001 M ... Serial dilutions are used to accurately create fairly diluted answers in addition to solutions for experiments ensuing in awareness curves with a logarithmic scale. A tenfold dilution for each step is referred to as a logarithmic dilution or log-dilution, a 3.Sixteen-fold (100.Five-fold) dilution is called a 1/2-logarithmic dilution or 1/2-log dilution, and a 1.78-fold (100.25-fold) dilution is called 1 / 4-logarithmic dilution or zone-log dilution. Serial dilutions are extensively used in experimental sciences, together with biochemistry, pharmacology, microbiology, and physics.In biology and medication, besides the more traditional uses defined above, serial dilution will also be used to lessen the concentration of microscopic organisms or cells in a pattern. As, for instance, the number and length of bacterial colonies that grow on an agar plate in a given time is attention-based, and considering the fact that many different diagnostic strategies involve physically counting the quantity of micro-organisms or cells on specials revealed with grids (for evaluating concentrations of  organisms or cell kinds within the sample) or wells of a given extent (for absolute concentrations), dilution can be beneficial for buying more attainable outcomes.[1] Serial dilution is likewise a cheaper and less difficult approach for getting ready cultures from a single cellular than optical tweezers and micromanipulators.