BE716372A - - Google Patents

Info

Publication number
BE716372A
BE716372A BE716372DA BE716372A BE 716372 A BE716372 A BE 716372A BE 716372D A BE716372D A BE 716372DA BE 716372 A BE716372 A BE 716372A
Authority
BE
Belgium
Application number
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of BE716372A publication Critical patent/BE716372A/xx

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
    • G01N21/274—Calibration, base line adjustment, drift correction

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
BE716372D 1968-06-11 1968-06-11 BE716372A (xx)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE716372 1968-06-11
BE59506 1968-06-11

Publications (1)

Publication Number Publication Date
BE716372A true BE716372A (xx) 1968-12-11

Family

ID=25647418

Family Applications (1)

Application Number Title Priority Date Filing Date
BE716372D BE716372A (xx) 1968-06-11 1968-06-11

Country Status (2)

Country Link
BE (1) BE716372A (xx)
FR (1) FR2010644A1 (xx)

Also Published As

Publication number Publication date
FR2010644A1 (xx) 1970-02-20

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Legal Events

Date Code Title Description
RE20 Patent expired

Owner name: SOLVAY ET CIE

Effective date: 19880611