MINIREFLECTOMETER-COLORIMETER FOR ANALYSIS OF LIQUID AND GASEOUS MEDIA BY REAGENT INDICATOR PAPER TESTS Russian patent published in 2002 - IPC

FIELD: spectral analysis of materials. SUBSTANCE: invention refers to colorimeters reading transmission spectra of liquids and to reflectometers reading spectra of diffuse reflection of solid-phase substances. Invention can also be employed for quantitative determination of substances in liquid and gaseous media with the use of reagent indicator paper tests. Minireflectometer-colorimeter is equipped with permanent storage and on-line storage connected to computer, current-to-voltage converter coupled to second input of amplifier. Light source made up of light-emitting diodes of different wave lengths and light detector are located in companion attachment which has two slits-guides arranged perpendicular to position reagent indicator paper tests and jack plug for quick-split connection with amplifier and power supply unit. In said case light source and detector are placed on different sides of one slit-guide. EFFECT: potential for compatible measurement of luminous radiation both diffusively reflected from indicator paper and transmitted through it. 11 dwg, 1 tbl