JPS5639431A - Colorimeter having two-light pass length and two-wave length - Google Patents

Colorimeter having two-light pass length and two-wave length

Info

Publication number
JPS5639431A
JPS5639431A JP11498079A JP11498079A JPS5639431A JP S5639431 A JPS5639431 A JP S5639431A JP 11498079 A JP11498079 A JP 11498079A JP 11498079 A JP11498079 A JP 11498079A JP S5639431 A JPS5639431 A JP S5639431A
Authority
JP
Japan
Prior art keywords
light pass
pass length
length
change
zero point
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.)
Pending
Application number
JP11498079A
Other languages
Japanese (ja)
Inventor
Susumu Yagyu
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
Priority to JP11498079A priority Critical patent/JPS5639431A/en
Publication of JPS5639431A publication Critical patent/JPS5639431A/en
Pending 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

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)
  • Spectrometry And Color Measurement (AREA)

Abstract

PURPOSE:To obtain analytical value having a high accuracy by compensating a drift of zero point providing a two-light pass length photometer which compares photometries by being allowed to change a light pass length of a flow cell periodically with two steps in said colorimeter with a two- wave length photometric means. CONSTITUTION:The colorimeter is adapted to constitute to compensate a change of zero point during its continuous measurement by being changed a distance between opposite faces of window plate glasses 12a and 12b of a flow cell, a light pass length. In other words, an absorbancy based upon the case when the light pass length is longer, changes in proportion to the difference between the light pass length. When the change of the light pass length is repeated in short time, the contamination degree between the glass plates, 12a and 12b, during this time is regarded to be invariable to the influence of the contamination of the window glass plate 12 in flow cell 4 is compensated. Further, if there is no rapid change of the concentration in a measured liquid within a short period wherein the light pass length is changed, the measuring is adapted to be performed always compensating the change of the zero point since the photometries are conducted by a comparison method with longer light pass length as a reference data. An analytical value having a high accuracy can be obtained by compensating a drift of zero point through such constitution.
JP11498079A 1979-09-06 1979-09-06 Colorimeter having two-light pass length and two-wave length Pending JPS5639431A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11498079A JPS5639431A (en) 1979-09-06 1979-09-06 Colorimeter having two-light pass length and two-wave length

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11498079A JPS5639431A (en) 1979-09-06 1979-09-06 Colorimeter having two-light pass length and two-wave length

Publications (1)

Publication Number Publication Date
JPS5639431A true JPS5639431A (en) 1981-04-15

Family

ID=14651369

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11498079A Pending JPS5639431A (en) 1979-09-06 1979-09-06 Colorimeter having two-light pass length and two-wave length

Country Status (1)

Country Link
JP (1) JPS5639431A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4786171A (en) * 1986-07-29 1988-11-22 Guided Wave, Inc. Spectral analysis apparatus and method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5338631A (en) * 1976-07-19 1978-04-08 Ile De France Treating composition for nerve and sympathetic nerve disease group

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5338631A (en) * 1976-07-19 1978-04-08 Ile De France Treating composition for nerve and sympathetic nerve disease group

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4786171A (en) * 1986-07-29 1988-11-22 Guided Wave, Inc. Spectral analysis apparatus and method

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