FR454158A - Method and apparatus for classifying powders, liquids, etc. - Google Patents

Method and apparatus for classifying powders, liquids, etc.

Info

Publication number
FR454158A
FR454158A FR454158DA FR454158A FR 454158 A FR454158 A FR 454158A FR 454158D A FR454158D A FR 454158DA FR 454158 A FR454158 A FR 454158A
Authority
FR
France
Prior art keywords
liquids
classifying powders
classifying
powders
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
Other languages
French (fr)
Inventor
Thomas Roberts
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 by Individual filed Critical Individual
Application granted granted Critical
Publication of FR454158A publication Critical patent/FR454158A/en
Expired legal-status Critical Current

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
    • G01N21/29—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using visual detection
    • G01N21/293—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using visual detection with colour charts, graduated scales or turrets

Landscapes

  • Physics & Mathematics (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)
FR454158D 1913-02-10 1913-02-10 Method and apparatus for classifying powders, liquids, etc. Expired FR454158A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR454158T 1913-02-10

Publications (1)

Publication Number Publication Date
FR454158A true FR454158A (en) 1913-06-27

Family

ID=1494191

Family Applications (1)

Application Number Title Priority Date Filing Date
FR454158D Expired FR454158A (en) 1913-02-10 1913-02-10 Method and apparatus for classifying powders, liquids, etc.

Country Status (1)

Country Link
FR (1) FR454158A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7612020A (en) * 1975-10-31 1977-05-03 Merck Patent Gmbh DEVICE AND METHOD FOR ANALYTICAL DETERMINATION OF MATERIALS IN A SOLUTION.
FR2540991A1 (en) * 1983-02-10 1984-08-17 Signorel Yves Device for measuring the degrees of coloration of surfaces by comparison with numbered shades of coloration

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7612020A (en) * 1975-10-31 1977-05-03 Merck Patent Gmbh DEVICE AND METHOD FOR ANALYTICAL DETERMINATION OF MATERIALS IN A SOLUTION.
FR2540991A1 (en) * 1983-02-10 1984-08-17 Signorel Yves Device for measuring the degrees of coloration of surfaces by comparison with numbered shades of coloration

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