DE29501257U1 - Photometer - Google Patents

Photometer

Info

Publication number
DE29501257U1
DE29501257U1 DE29501257U DE29501257U DE29501257U1 DE 29501257 U1 DE29501257 U1 DE 29501257U1 DE 29501257 U DE29501257 U DE 29501257U DE 29501257 U DE29501257 U DE 29501257U DE 29501257 U1 DE29501257 U1 DE 29501257U1
Authority
DE
Germany
Prior art keywords
photometer
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 - Lifetime
Application number
DE29501257U
Other languages
German (de)
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.)
Macherey Nagel GmbH and Co Handelsgesellschaft
Original Assignee
Macherey Nagel GmbH and Co KG
Macherey Nagel und Co Chemikalienhandel
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
Priority claimed from DE19944404768 external-priority patent/DE4404768C1/en
Application filed by Macherey Nagel GmbH and Co KG, Macherey Nagel und Co Chemikalienhandel filed Critical Macherey Nagel GmbH and Co KG
Priority to DE29501257U priority Critical patent/DE29501257U1/en
Publication of DE29501257U1 publication Critical patent/DE29501257U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G01N21/27—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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/12—Circuits of general importance; Signal processing
    • G01N2201/127—Calibration; base line adjustment; drift compensation
    • G01N2201/12746—Calibration values determination
    • G01N2201/12753—Calibration values determination and storage
DE29501257U 1994-02-16 1995-01-27 Photometer Expired - Lifetime DE29501257U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE29501257U DE29501257U1 (en) 1994-02-16 1995-01-27 Photometer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19944404768 DE4404768C1 (en) 1994-02-16 1994-02-16 Method for calibrating a photometer and photometer for carrying out this method
DE29501257U DE29501257U1 (en) 1994-02-16 1995-01-27 Photometer

Publications (1)

Publication Number Publication Date
DE29501257U1 true DE29501257U1 (en) 1995-03-16

Family

ID=25933818

Family Applications (1)

Application Number Title Priority Date Filing Date
DE29501257U Expired - Lifetime DE29501257U1 (en) 1994-02-16 1995-01-27 Photometer

Country Status (1)

Country Link
DE (1) DE29501257U1 (en)

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Legal Events

Date Code Title Description
R207 Utility model specification

Effective date: 19950427

R081 Change of applicant/patentee

Owner name: MACHEREY, NAGEL GMBH & CO. HANDELSGESELLSCHAFT, DE

Free format text: FORMER OWNER: MACHEREY, NAGEL & CO, 52355 DUEREN, DE

Effective date: 19970909

R156 Lapse of ip right after 3 years

Effective date: 19981001