FR739456A - Comparator colorimeter for rapid determination of the pp of a liquid - Google Patents

Comparator colorimeter for rapid determination of the pp of a liquid

Info

Publication number
FR739456A
FR739456A FR739456DA FR739456A FR 739456 A FR739456 A FR 739456A FR 739456D A FR739456D A FR 739456DA FR 739456 A FR739456 A FR 739456A
Authority
FR
France
Prior art keywords
colorimeter
comparator
liquid
rapid determination
rapid
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)
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.)
AGRICOLE de la SOMME SOC IND
Original Assignee
AGRICOLE de la SOMME SOC IND
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 AGRICOLE de la SOMME SOC IND filed Critical AGRICOLE de la SOMME SOC IND
Application granted granted Critical
Publication of FR739456A publication Critical patent/FR739456A/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
FR739456D 1932-07-04 1932-07-04 Comparator colorimeter for rapid determination of the pp of a liquid Expired FR739456A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR739456T 1932-07-04

Publications (1)

Publication Number Publication Date
FR739456A true FR739456A (en) 1933-01-12

Family

ID=9132738

Family Applications (1)

Application Number Title Priority Date Filing Date
FR739456D Expired FR739456A (en) 1932-07-04 1932-07-04 Comparator colorimeter for rapid determination of the pp of a liquid

Country Status (1)

Country Link
FR (1) FR739456A (en)

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