Dilution Calculations: Since dilutions are simply changes in the ratio of solute to solvent, a simple ratio of concentration to volume can be used for almost all calculations involving dilutions:

The dilution factor is the total number of unit volumes in which your material will be dissolved. The diluted material must then be thoroughly mixed to achieve the true dilution.

Dilute BEFORE running the analysis, NOT after (e.g., if a colorimeter/spectro-photometer test result is over range, diluting it after reagent addition may give a false low reading because the …

Understanding the basic concepts of dilution and concentration uncomplicates these problems. Many problems can be solved in several ways. The best way is not necessarily the shortest: …

To perform a viable cell count, a sample of bacterial cells is first diluted through a series of dilutions. (A series of dilutions is required because the original concentration of cells is …

Make 1.75 ml (1750 μL) total volume of a 1:50 dilution: ody to 1715 μL diluent. Mix gently and remove 750 μL of the 1:50 mixe Make 1.5 ml (1500 μL) total volume of a 1:100 dilution: aking …

These solutions are then diluted to the required strength as and when required for the individual patient. This also means the same solution substance may be used for a different range of …