Trans Fats or Hydrogenated Fats. Trans fats are actually unsaturated fats, but they can raise total and LDL (bad) cholesterol levels while also lowering HDL (good) cholesterol levels. Trans fats are used to extend the shelf life of processed foods, typically cookies, cakes, fries and donuts.rans Fats or Hydrogenated Fats. Trans fats are actually unsaturated fats, but they can raise total and LDL (bad) cholesterol levels while also lowering HDL (good) cholesterol levels. Trans fats are used to extend the shelf life of processed foods, typically cookies, cakes, fries and donuts.
High-efficiency particulate arrestance (HEPA), also sometimes called high-efficiency particulate arresting or high-efficiency particulate air, is a type of air filter.
In any event, the efficiency of every filter is of paramount importance and must be measured in an appropriate way. Mil-Std-282 is recognized as the standard for hot DOP efficiency testing and is used for compliance with many HEPA filter specifications. It is also recognized as being monodisperse 0.3 micron particles as referenced in EPA and OSHA definitions for HEPA filters.