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Related Concept Videos

Solution Concentration and Dilution02:59

Solution Concentration and Dilution

The relative amount of a given solution component is known as its concentration. Often, though not always, a solution contains one component with a concentration that is significantly greater than that of all other components. This component is called the solvent and may be viewed as the medium in which the other components are dispersed or dissolved. Solutions in which water is the solvent are, of course, very common on our planet. A solution in which water is the solvent is called an aqueous...
Standard Solutions01:14

Standard Solutions

Standard solutions refer to solutions with a precisely known concentration or composition. A primary standard is a highly pure, high molar mass, stable substance that is entirely soluble in water, the most commonly used solvent in analytical chemistry. The primary standard solution can be used to standardize secondary standards, which are substances with known concentrations but are less pure and stable. Standard solutions are essential for achieving accurate and reliable results in analytical...
Expressing Solution Concentration02:48

Expressing Solution Concentration

A solute is a component of a solution that is typically present at a much lower concentration than the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
Concentrations may be quantitatively assessed using a wide variety of measurement units, each convenient for particular applications. Molarity (M) is a useful concentration unit for many applications in chemistry.
Washing, Drying, and Ignition of Precipitates00:52

Washing, Drying, and Ignition of Precipitates

After filtration, the precipitate is washed to remove coprecipitated impurities and any remaining mother liquor. Colloidal precipitates, such as silver chloride, are washed with an electrolyte (such as dilute nitric acid) to prevent the peptization of the precipitate. In the case of slightly soluble precipitates, the wash solution contains a common ion to reduce solubility. Lead sulfate, which is slightly soluble in water, is washed with dilute sulfuric acid. Similarly, wash solutions may be...
Colloids03:22

Colloids

Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...

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Related Experiment Video

Updated: Jun 4, 2026

Flash NanoPrecipitation for the Encapsulation of Hydrophobic and Hydrophilic Compounds in Polymeric Nanoparticles
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Flash NanoPrecipitation for the Encapsulation of Hydrophobic and Hydrophilic Compounds in Polymeric Nanoparticles

Published on: January 7, 2019

Making and diluting stock solutions.

Dany Spencer Adams

    CSH Protocols
    |March 2, 2011
    PubMed
    Summary
    This summary is machine-generated.

    Learn how to prepare and dilute stock solutions, which are concentrated solutions used in experiments. Properly made stock solutions save time and space by allowing for easy dilution to desired concentrations.

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    Area of Science:

    • Chemistry
    • Laboratory Science

    Background:

    • Many experiments require frequently used solutions.
    • Preparing solutions from scratch can be time-consuming and space-intensive.

    Purpose of the Study:

    • To describe the appropriate methods for preparing and diluting stock solutions.
    • To highlight the benefits of using stock solutions in experimental settings.

    Main Methods:

    • Preparation of concentrated stock solutions.
    • Dilution of stock solutions to working concentrations.

    Main Results:

    • Stock solutions minimize storage volume.
    • Stock solutions streamline experimental procedures.

    Conclusions:

    • Appropriate preparation and dilution of stock solutions are essential laboratory techniques.
    • Stock solutions offer significant advantages in terms of time and space efficiency for researchers.