Abstract: Method and device for the synthesis of macromolecules, including peptides, polynucleotides or oligosaccharides. The method and device involves a reactor which contains a solid support on which a component of the product to be synthesized is fixed. The reactor comprises filters at its ends and is mounted movably for rectilinear reciprocating movement in a vessel which contains a reactive liquid. A temperature probe is provided to detect the temperature variations of the reactive liquid due to passage into and out of the reactor. The progress of coupling and deprotection reactions which occur in the synthesis of peptides, polynucleotides and oligosaccharides is monitored.

Abstract: The present invention relates to compositions for protecting metals which contain a mixture constituted by stearic acid, dicyclohexylamine, and an azole derivative, and more particularly to a composition containing from 0.8 to 1.4 g/l of 1-phenyl-5-mercaptotetrazole, and from 0.005 to 0.01 g/l of the mixture stearic acid:dicyclohexylamine in the molar ratio 1:1, in solution in water, as well as to the process for its preparation, and to methods for protecting metals using said compositions.