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Specific gravity and density testing is often used for quality control measures.

Specific Gravity is a measure of the ratio of the mass of a given volume of material at 23 °C to the same volume of water. Density, a closely related measurement, is defined as the mass per unit volume of a sample.


Specific Gravity and Density tests can be used to identify a material or to follow physical changes in a sample.  Specific Gravity and Density tests can also be used to indicate the degree of uniformity or variability among different sampling units or specimens, or to indicate the average density of a large item.  

ASTM Standards:

  • D1475
  • D792
  • D1505

Sample Considerations

he standard test methods have differing sample requirements. We have a variety of test methods and customized testing available to meet the needs of your material.

The sample does not necessarily need to be in one solid piece, for example, pellets adding up to a cubic centimeter could be used.

Specific Gravity and/or Density testing can be performed on liquid and solid samples in forms such as:

  • Sheets
  • Rods
  • Tubes
  • Films
  • Molded Items

Contact us with your specific sample consideration questions.


Work we’ve done:

  • Screening for contaminants
  • Comparisons of  “good” and “bad” samples
  • Batch to batch control
  • Quality control assurance testing