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Updated: Oct 19, 2025
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The Density Determination of Small Solid Objects by a Simple Float Method-II
1National Bureau of Standards, Washington, DC 20234.
Journal of Research of the National Bureau of Standards (1977)
|September 27, 2021
Summary
This study introduces a new apparatus for precise density change measurements in small solid samples. The novel method achieves high accuracy, enabling detailed comparisons with theoretical predictions.
Area of Science:
- Materials Science
- Physical Chemistry
- Analytical Chemistry
Background:
- Accurate density measurements are crucial for characterizing solid materials.
- Existing methods may lack precision for small samples (<1 gram).
Purpose of the Study:
- To present a novel apparatus for precise relative density change measurements.
- To demonstrate the apparatus's capability with small solid samples.
Main Methods:
- Utilized a newly reported apparatus for density measurements.
- Performed relative measurements on solid samples under one gram.
- Achieved a measurement precision of a few parts in 104.
Main Results:
- Successfully measured density changes in small solid samples.
- Demonstrated high precision (few parts in 104) in relative measurements.
- Presented comparisons between experimental results and theoretical models.
Conclusions:
- The developed apparatus enables highly precise density change measurements for small samples.
- The findings support the utility of the new apparatus in materials characterization and validation.
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