ASK THE EXPERT - Previous Questions

<< Back to the Quality, Certification & Testing Center
Click on the link below to submit your question to the experts on NPIcenter.
Ask the Experts


Q. What is molecular distillation? is this the process used by MEG-3 fish oil to purify the oil?

A: The definition of Molecular Distillation according to the 2002 Merriam-Webster's Medical Desk Dictionary, Revised Edition is: "a distillation that is carried out under a high vacuum in an apparatus so designed as to permit molecules escaping from the warm liquid to reach the cooled surface of the condenser before colliding with other molecules and consequently returning to the liquid and that is used in the purification of substances of low volatility (as in the separation of vitamin A and vitamin E from fish-liver oils)." This process is commonly used in the purification and concentration of fish oils since it is less destructive than other techniques and apparently reduces the decomposition of Omega-3 fatty acids during processing. In regards to the Meg-3 product you will need to contact the manufacturer, Ocean Nutrition, directly to see if they are willing to share what process (or processes) they use to manufacture Meg-3.

Q: What does USP stand for?

A: USP stands for United States Pharmacopeia (, the public standard setting authority for dietary supplements and other health products. This organization produces the USP-NF, a single-volume combination of two official compendia, the United States Pharmacopeia (USP) and the National Formulary (NF). Q: What does HPTLC do? A: HPTLC is High Performance Thin Layer Chromatography, an automated form of Thin Layer Chromatography (TLC) which allows analysts to reduce analysis time and solvent required and to optimize resolution. According to the American Herbal Pharmacopoeia(R), ( "High performance thin layer chromatography (HPTLC) is an invaluable quality assessment tool for the evaluation of botanical materials. It allows for the analysis of a broad number of compounds both efficiently and cost effectively."
Hide comments


  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.