Physical Characteristics of Proppant

Stim-Lab performs testing under the API Standard 19C 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 proppant
• 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
• Loss of Ignition
• Crush Resistance - stress specific