Page 203 - Illustrated Pocket Dictionary of Chromatography

206 UNIVERSAL SOLVENT

universal solvent Miscible with a wide range of polar and non-
polar solvents (such as acetone and isopropyl alcohol). Note that this
applies only to solvents and not to buffer-modified solvents, mobile-
phase modified systems, or solutions containing salts. These solvents
are used to convert systems from normal phase to reversed phase use
(and vice verse).

UV cutoff The wavelength at which the absorbance of the solvent
in a 1-cm cell (versus air) is equal to unity.