Why does it state on some labels that the product is “distilled for purity” whereas others state that they are “molecularly distilled?” Is there a difference?

The difference pertains to the type of distillation process used for the product, which depends upon the type/concentration of the product. The labels that state “distilled for purity” contain our non-concentrated fish oil, which is flash distilled. Our Arctic Cod Liver Oils and concentrated fish oils are molecularly distilled, and thus state “molecularly distilled” on the label. The differences between the two distillation processes are explained in more detail in the questions below.