FI20060439L - Method and apparatus for determining refractive index and turbidity - Google Patents

Method and apparatus for determining refractive index and turbidity Download PDF

Info

Publication number
FI20060439L
FI20060439L FI20060439A FI20060439A FI20060439L FI 20060439 L FI20060439 L FI 20060439L FI 20060439 A FI20060439 A FI 20060439A FI 20060439 A FI20060439 A FI 20060439A FI 20060439 L FI20060439 L FI 20060439L
Authority
FI
Finland
Prior art keywords
light
refractive index
sample
light source
cell
Prior art date
Application number
FI20060439A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI20060439A0 (en
Inventor
Raimo Veli Johann Silvennoinen
Markku Hauta-Kasari
Kari Myller
Original Assignee
Kari Myller
Markku Hauta-Kasari
Raimo Veli Johann Silvennoinen
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 Kari Myller, Markku Hauta-Kasari, Raimo Veli Johann Silvennoinen filed Critical Kari Myller
Priority to FI20060439A priority Critical patent/FI20060439L/en
Publication of FI20060439A0 publication Critical patent/FI20060439A0/en
Priority to PCT/FI2007/000123 priority patent/WO2007128865A1/en
Publication of FI20060439L publication Critical patent/FI20060439L/en

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
    • G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
    • G01N21/4133—Refractometers, e.g. differential
    • 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
    • G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
    • G01N21/45—Refractivity; Phase-affecting properties, e.g. optical path length using interferometric methods; using Schlieren methods
    • 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
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/51—Scattering, i.e. diffuse reflection within a body or fluid inside a container, e.g. in an ampoule

Landscapes

  • Physics & Mathematics (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)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Optical Measuring Cells (AREA)

Abstract

The object of the invention is an apparatus for determining refractive index and/or turbidity, which comprises a light source (1), a dish containing the liquid to be measured (4,5), and a light sensitive sensor (6), with which the light that has passed through the sample is stored on a cell for analysis. It is characterized in that the apparatus additionally comprises a diffraction grid element (3), which bends the light between the light source (1) and the sample dish (4,5), for the collection of the diffracted light that has passed through the sample dish onto a cell as a spot figure as a result of interference. In the method of the invention, the light from the light source (1) is directed through the diffraction grid element (3) which bends the light between the light source (1) and the sample dish (4,5). The light beams which have been bent into different angles by the sample are stored in the form of a spot matrix figure into the cell and the refractive index of the liquid is determined by the locations of the spots.
FI20060439A 2006-05-08 2006-05-08 Method and apparatus for determining refractive index and turbidity FI20060439L (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI20060439A FI20060439L (en) 2006-05-08 2006-05-08 Method and apparatus for determining refractive index and turbidity
PCT/FI2007/000123 WO2007128865A1 (en) 2006-05-08 2007-05-08 Method and apparatus for determination of refractive index and turbidity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20060439A FI20060439L (en) 2006-05-08 2006-05-08 Method and apparatus for determining refractive index and turbidity

Publications (2)

Publication Number Publication Date
FI20060439A0 FI20060439A0 (en) 2006-05-08
FI20060439L true FI20060439L (en) 2007-11-09

Family

ID=36539886

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20060439A FI20060439L (en) 2006-05-08 2006-05-08 Method and apparatus for determining refractive index and turbidity

Country Status (2)

Country Link
FI (1) FI20060439L (en)
WO (1) WO2007128865A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101782515B (en) * 2010-03-05 2011-07-20 陕西师范大学 Method for measuring liquid refractive rate based on total reflection diaphragm effect
CN101776572B (en) * 2010-03-05 2011-07-20 陕西师范大学 Liquid refractive index CCD real-time measuring device and measuring method
CN101799413B (en) * 2010-03-05 2011-07-06 陕西师范大学 Experimental apparatus for measuring refractive indexes of liquid and measuring method thereof
CN111830025B (en) * 2020-07-21 2023-10-31 宿迁学院 Electrolytic machining on-line measuring device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0598968A1 (en) * 1992-11-25 1994-06-01 Ciba-Geigy Ag Interferometric apparatus for monitoring changes of the refractive index of fluid samples in capillary tubes
GB0220684D0 (en) * 2002-09-05 2002-10-16 Riso Nat Lab Refractive index determination by micro interferometric reflection detection
WO2005050179A1 (en) * 2003-11-24 2005-06-02 Qualisense Technologies Ltd. Method and system for identification of changes in fluids

Also Published As

Publication number Publication date
WO2007128865A1 (en) 2007-11-15
FI20060439A0 (en) 2006-05-08

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