Abstract: The invention concerns a method and a device for the objective qualitative analysis of liquid vinification compositions, comprising memory means (8) in which are recorded calibrating values of spectroscopic criteria for a group of characteristic parameters comprising the concentration levels of at least a compound produced by Botrytis cinerea, at least a compound produced by yeasts, at least a compound produced by the acetic bacteria, and at least a compound produced by lactic acid bacteria, means (1, 2, 3, 4, 6) for producing a continuous infrared spectrum, and means (7) for calculating the value (VP) of each characteristic parameter in the composition from the spectrum.

Abstract: The present invention provides scintillation material having good stability at continuous operating temperatures of at least 175° C. The scintillation material includes a cross linked copolymer with improved aromatic character that form a host plastic having properties of a thermoset polymer. The host plastic contains a primary fluorescent agent and a wavelength shifter. Preferably, the copolymer is comprised of a styrene derivative such as, for example, p-t-butylstyrene, and a higher melting point compound such as, for example, 4-vinylbiphenyl. In accordance with one aspect of the present invention, the scintillation material possesses properties of: good mechanical properties at high temperature (e.g., a Tg of about 180° C.); excellent light output (e.g., energy transfer efficiency); high hydrogen content for fast neutron detection; good optical transparency; and stable operation at temperature.