Abstract: Composition and use of polymers in appropriate solvent(s) with or without addition of selected dye combinations are proposed for developing a thin-layer coating on the transparent layer of optical storage media such as audio and video CDs, laser discs (LD) and DVDs for improvement of the sound and/or video quality during either recording and/or playback of the encoded digital information. The invention can also be incorporated in manufacture of recordable (CD-R) and re-writeable CD (CD-RW) media. In that case, the proposed composition is applied on the polycarbonate transparent surface of optical storage media at the final stages of recordable media manufacturing.

Abstract: Compositions and methods are provided for clarifying and partitioning aqueous lipid-containing specimens or samples such as lipemic serum and plasma. The compositions contain zwitterionic surfactant and water-immiscible organic solvent for lipids. The components of the compositions are selected such that they are compatible in vitro and, when constituted with aqueous specimens, do not interfere with biological or chemical activity of endogenous and exogenous analytes present in the respective specimens. The methods serve to partition the specimens into discrete aqueous and non-aqueous phases. The phases in turn can be individually assayed with respect to any of various analytes, for diagnostic or other purposes.