Accession Number : AD0497771

Title :   A Recording Photometer and Accompanying Apparatus for Use in Measurement of Reaction Kinetics.

Descriptive Note : Technical rept. no. 3, 1 Sep 48-1 Oct 49,

Corporate Author : HARVARD UNIV CAMBRIDGE MASS

Personal Author(s) : Kwart,Harold ; Yang,Chiahchih

Report Date : 01 FEB 1950

Pagination or Media Count : 50

Abstract : An apparatus is described in this report which affords automatic recording of fractional light transmission and hence of reagent concentrations during reaction kinetic studies. The reagent concentrations are followed by means of double beam spectrophotometry. The instrument is provided with apparatus for initiating photochemical chain reactions and affords conditions for rotating-sector measurements during spectrophotometric observations. Data are presented on the performance, sensitivity and precision of measurement. (Author)

Descriptors :   (*SPECTROPHOTOMETERS, RECORDING SYSTEMS), (*CONCENTRATION(CHEMISTRY), MEASUREMENT), (*PHOTOCHEMICAL REACTIONS, REACTION KINETICS), LIGHT TRANSMISSION, ABSORPTION, ATTENUATION, THERMOSTATS, PHOTOMULTIPLIER TUBES, PHOTOTUBES, AUDIO AMPLIFIERS, STABILITY, GAIN, SERVOMOTORS, ERRORS, LENSES, ACCURACY, SENSITIVITY, PERFORMANCE(ENGINEERING), BAND PASS FILTERS, OPTICAL FILTERS, DIELECTRIC FILMS

Subject Categories : Physical Chemistry
      Radiation and Nuclear Chemistry
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE