US CN RU

Core Lab welcomes Guardian Global Technologies as part of the Core Lab Team! Click here to learn about Guardian and their complementary next generation Production Enhancement technologies.

Physical Characteristics of Proppant


Stim-Lab performs testing under the ISO 13503-2 standard to evaluate proppant characteristics under specified testing conditions in the laboratory.


Tests include:

  • Sieve analysis - grain size distribution
  • Sphericity and roundness (Krumbein shape factor)
  • Acid Solubility-indicates the presence of "impurities" in the sand
  • Turbidity (silt and fine particulate)
  • Crush resistance for 10% K value
  • Apparent density
  • Bulk density-the mass of material that fills a volume, includes both proppant and porosity