Industry separates crude oil, natural gas and chemical mixtures into pure products by means of fractionating distillation columns. This process is energy-intensive, but a new type of column structure ...

Chromatography is a proven method used to separate complex samples into their constituents, and it is undisputedly the most important procedure for isolating and purifying chemicals. It is classified ...

Liquid chromatography - mass spectrometry (LC-MS) combines two approaches to separate and identify molecules or compounds present in a sample. High performance liquid chromatography (HPLC) separates ...

Students learn to identify various methods for separating mixtures to define density. Matter: Separation of Mixtures: Students learn to identify various methods for separating mixtures, to define ...

Distillation columns are extensively deployed in the chemical process industries when there is a need for separation of components that have different boiling points. Typically, a mixture of ...

Different methods are used to separate different mixtures. The method chosen depends upon the properties of the components of the mixture.

As a general rule, disclosure of a drug material comprised of a mixture of components, without more, does not render obvious a specific component of that mixture. See, e.g., In re May, 574 F.2d 1082, ...