Abstract: Apparatus for weighing out the remaining quantity of a substance in a storage vessel disposed in a cabinet and attached with rigid connecting lines to a valve plate fastened in the cabinet and from which rigid connecting lines lead to a consumer. The apparatus includes at least one load cell on which the storage vessel is set down, and a stand is provided having fastened thereto a platform provided with the load cell. The stand is set down on the cabinet floor and/or suspended on a cabinet wall, and the valve plate is fastened to the stand.

Abstract: Apparatus for weighing out the remaining quantity of a substance in a storage vessel disposed in a cabinet and attached with rigid connecting lines to a valve plate fastened in the cabinet and from which rigid connecting lines lead to a consumer. The apparatus includes at least one load cell on which the storage vessel is set down, and a stand is provided having fastened thereto a platform provided with the load cell. The stand is set down on the cabinet floor and/or suspended on a cabinet wall, and the valve plate is fastened to the stand.

Abstract: An apparatus for measuring the concentration of a substance in a specimen. The apparatus includes a housing that defines a chamber for the specimen. A radiation source mounted to the housing emits radiation at a wavelength at which the radiation is absorbed by the substance. Two spaced apart receivers are mounted to the housing. Both receivers detect radiation at the wavelength at which it is absorbed by the specimen. Two concave mirrors are disposed in the housing. The mirrors are positioned to split the radiation emitted by the source into two beams, each of the beams being directed to a separate one of the receivers and so that the paths of travel of the beams from the source to the separate receivers are of different lengths. The concentration of the substance is determined by based on the difference in radiation detected by the receivers.

Abstract: A process is provided for removing fluorinated compounds, such as perfluorinated or partially fluorinated C1 to C4 hydrocarbons, NF.sub.3 and SF.sub.6, out of a gas by passing this gas through gamma alumina, wherein the temperature of the gamma alumina is between ambient temperature and 600.degree. C. The gas stream and the gamma alumina are anhydrous. The fluorinated compounds chemically react with the gamma alumina to result in a gas containing a diminished quantity of fluorinated compounds and an aluminum fluoride containing composition.