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Related Concept Videos

Constant Volume Calorimetry02:41

Constant Volume Calorimetry

Calorimeters are useful to determine the heat released or absorbed by a chemical reaction. Coffee cup calorimeters are designed to operate at constant (atmospheric) pressure and are convenient to measure heat flow (or enthalpy change) accompanying processes that occur in solution at constant pressure. A different type of calorimeter that operates at constant volume, colloquially known as a bomb calorimeter, is used to measure the energy produced by reactions that yield large amounts of heat and...
Calorimetry01:19

Calorimetry

When objects at different temperatures are placed in contact with each other but isolated from everything else, they attain thermal equilibrium. A container that prevents heat transfer in or out is called a calorimeter, and the use of a calorimeter to make measurements is called calorimetry. Generally, these measurements involve heat or specific heat capacity. The term "calorimetry problem" is used for any problem where the specified objects are thermally isolated from their surroundings. An...
Constant Pressure Calorimetry03:02

Constant Pressure Calorimetry

Calorimetry is a technique used to measure the amount of heat involved in a chemical or physical process or to measure the heat transferred to or from a substance. The heat is exchanged with a calibrated and insulated device called the calorimeter. Calorimetry experiments are based on the assumption that there is no heat exchange between the insulated calorimeter and the external environment. The well-insulated calorimeters prevent the transfer of heat between the calorimeter and its external...
Glassware Calibration01:11

Glassware Calibration

Accurate calibration of glassware, such as volumetric flasks, pipettes, and burettes, is essential to ensure accurate measurements in the analytical laboratory. Calibration helps maintain consistency across measurements and prevents errors arising from inaccurate volumes.
Volumetric flasks: Volumetric flasks are designed to prepare aqueous solutions of precise volumes accurately with a calibration line on the neck. To calibrate a volumetric flask, it is important to fill it with distilled...
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...
Sample Handling01:02

Sample Handling

Transportation of samples from the collection point to the laboratory, as well as storage and preservation techniques, are crucial for maintaining sample integrity and ensuring accurate and reliable test results.
Samples should be transported carefully from collection points to the laboratory. They should be properly sealed and clearly labeled to prevent cross-contamination. To preserve the sample integrity, optimal temperature conditions during transport are essential. This could involve using...

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Updated: Jul 2, 2026

Isothermal Titration Calorimetry for Measuring Macromolecule-Ligand Affinity
08:45

Isothermal Titration Calorimetry for Measuring Macromolecule-Ligand Affinity

Published on: September 7, 2011

Novel sample container for solution calorimetry.

D L Raschella1, R L Fellows, J R Peterson

  • 1Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37916, USA.

The Review of Scientific Instruments
|November 1, 1979
PubMed
Summary
This summary is machine-generated.

A novel calorimeter sample container design features breakable glass membranes for easy sample release. These durable, reproducible-volume containers are simple to fabricate and handle, offering a practical solution for calorimetry experiments.

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Area of Science:

  • Materials Science
  • Chemical Engineering
  • Analytical Chemistry

Background:

  • Calorimetry requires specialized sample containers for accurate thermal measurements.
  • Existing sample containers may present challenges in sample introduction or removal.
  • The need for robust, reproducible, and easily handled containers is critical in calorimetric studies.

Purpose of the Study:

  • To introduce a new, easily fabricated design for calorimeter sample containers.
  • To demonstrate the reproducibility of container volumes and durability.
  • To provide a container that allows for complete sample release.

Main Methods:

  • Fabrication of hollow right cylindrical containers.
  • Sealing thin glass membranes to container ends using silicone rubber.
  • Testing container durability and volume reproducibility.
  • Evaluating ease of sample release via membrane breakage.

Main Results:

  • The new design is easily fabricated with highly reproducible volumes.
  • The containers demonstrate surprising durability despite fragile membranes.
  • The design allows for complete sample release by breaking the membranes.
  • Considerable handling of the container is possible without compromising integrity.

Conclusions:

  • The described calorimeter sample container design offers a practical and efficient solution.
  • Its ease of fabrication, reproducible volumes, and durability make it suitable for various calorimetric applications.
  • The breakable membrane design facilitates straightforward sample retrieval.