Get Laboratory Stock Solutions And Equipment Form

We define a stock solution as a concentrate, that is, a solution to be diluted to some lower concentration for actual use. We may use just the stock solution or use it as a component in a more complex solution. We refer to the solution that we end up using as a working solution.

Stock solutions can best be described as concentrated solutions of known, accurate concentrations that will be diluted for future laboratory use. While you may choose not to prepare stock solutions, doing so can help streamline your operation and save you a lot of time and resources in the process.

A stock solution is prepared by weighing out an appropriate portion of a pure solid or by measuring out an appropriate volume of a pure liquid, placing it in a suitable flask, and diluting to a known volume. Exactly how one measure's the reagent depends on the desired concentration unit.

Stock solutions can best be described as concentrated solutions of known, accurate concentrations that will be diluted for future laboratory use. While you may choose not to prepare stock solutions, doing so can help streamline your operation and save you a lot of time and resources in the process.

Examples of stock solutions are a five molar solution of NaCl or two molar solution of Tris-HCl. It is important to understand that when you are diluting a solution, you are not removing any of the solute. The total amount, or mass, of the solute does not change.

Stock Solution Dilutions C1 x V1 = C2 x V2 C1 = stock concentration (beginning concentration) V1 = volume of stock required to prepare new solution. C2= concentration of new or working solution (desired concentration) V2= volume of new solution desired. Example: X = 160 mL of 5% stock solution diluted to 400 mL.

Definition: Working Solution is a name given to a chemical solution made for actual use in the lab, usually made from diluting or combining stock or standard solutions.