Quality Assurance


EPI’s Quality Assurance Testing Capabilities

EPI’s Quality Assurance/Quality Control departments operate in a 6,500 sq. feet, multi-million dollar laboratory facility. Microbiological, heavy metals, analytical and stability testing are conducted in-house by skilled technicians.

EPI’s manufacturing and packaging operations are compliant with FDA, FTC, DSHEA and all federal and state regulations, including California Proposition 65.

Our comprehensive testing capabilities include the following processes:

Microbial Screenings

  • Salmonella
  • E. coli
  • Staphylococcus aureus
  • Enterobacteriaceae
  • Yeast
  • Mold 
  • Lactic Acid Bacteria
  • Total Coliforms
  • Total Aerobic Plate Count

Irradiation Detection

  • Pulsed Photo Stimulated Luminescence (PPSL)

Pesticide Screening

  • Gas Chromatography Mass Spectrometry (GC-MS)

Identity Confirmation

  • Thin Layer Chromatography (TLC)
  • High Performance Thin Layer Chromatography (HPTLC)
  • Botanical Microscopy
  • Infrared Spectroscopy (Mid-FTIR and Near-FTIR)
  • Organoleptic Testing

Vitamin Assays

  • High Performance Liquid Chromatography (HPLC)
  • Ultra Performance Liquid Chromatography Mass Spectrometry (UPLC-MS)
  • Ultraviolet-Visible Spectroscopy (UV-Vis)

Mineral and Heavy Metal Assays

  • Atomic Absorption (AA)
  • Inductively Coupled Plasma Mass Spectrometry (ICP-MS)

Additional Capabilities

  • USP Tablet Disintegration
  • Friability
  • Hardness
  • Foreign Organic/Inorganic Matter
  • Moisture Analysis
  • ATP Screenin
  • pH Determination
  • Stability Studies


New Customer?

Let's talk! Use our online form or call us at 800-537-7695.


one number to call

Essentially Pure Ingredients
  • 21411 Prairie Street, Chatsworth, CA 91311

  • Phone: 818-739-6046
  • Toll Free: 800-537-7695
  • Fax: 818-739-6001