JPS6491036A - Measuring apparatus of particles in liquid - Google Patents

Measuring apparatus of particles in liquid

Info

Publication number
JPS6491036A
JPS6491036A JP62247927A JP24792787A JPS6491036A JP S6491036 A JPS6491036 A JP S6491036A JP 62247927 A JP62247927 A JP 62247927A JP 24792787 A JP24792787 A JP 24792787A JP S6491036 A JPS6491036 A JP S6491036A
Authority
JP
Japan
Prior art keywords
sample liquid
light
irradiation light
confined
irradiation
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
JP62247927A
Other languages
Japanese (ja)
Inventor
Kazuo Takeda
Yoshitoshi Ito
Noriaki Honma
Tadasuke Munakata
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP62247927A priority Critical patent/JPS6491036A/en
Priority to DE3832901A priority patent/DE3832901A1/en
Priority to US07/250,615 priority patent/US4876458A/en
Publication of JPS6491036A publication Critical patent/JPS6491036A/en
Pending legal-status Critical Current

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  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

PURPOSE:To eliminate the occurrence of stray light and the useless application of irradiation light and also to eliminate the omission in counting, by confining the irradiation light in a sample liquid by using a difference in a refractive index between the air and the sample liquid. CONSTITUTION:A particulate measuring apparatus applies light from an irradiation light source 6 in the same direction with that of a thread-shaped flow of a sample liquid 2 by using a reflector 4. The irradiation light used is not limited to visible light, and laser light can also be used. This irradiation light is confined in the channel of the tread-shaped flow by the total reflection in the sample liquid, since there is a difference in a refractive index between the sample liquid and the air, and in addition, it irradiates the whole area of the section of the flow channel. In contrast, scattered beams of light from particles in the sample liquid occur also in the direction perpendicular to the surface of the sample liquid, and therefore they are not confined in the sample liquid. These scattered beams of light converged by a lens 7, the detection area thereof is limited by an aperture 8, and they are detected by a detector 9. Transmitted light and the sample liquid are led into a collecting tube 3 to be collected.
JP62247927A 1987-10-02 1987-10-02 Measuring apparatus of particles in liquid Pending JPS6491036A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP62247927A JPS6491036A (en) 1987-10-02 1987-10-02 Measuring apparatus of particles in liquid
DE3832901A DE3832901A1 (en) 1987-10-02 1988-09-28 PARTICLE MEASURING DEVICE
US07/250,615 US4876458A (en) 1987-10-02 1988-09-29 Apparatus for measuring particles in liquid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62247927A JPS6491036A (en) 1987-10-02 1987-10-02 Measuring apparatus of particles in liquid

Publications (1)

Publication Number Publication Date
JPS6491036A true JPS6491036A (en) 1989-04-10

Family

ID=17170617

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62247927A Pending JPS6491036A (en) 1987-10-02 1987-10-02 Measuring apparatus of particles in liquid

Country Status (1)

Country Link
JP (1) JPS6491036A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016522893A (en) * 2013-04-26 2016-08-04 ベクトン・ディキンソン・アンド・カンパニーＢｅｃｔｏｎ， Ｄｉｃｋｉｎｓｏｎ Ａｎｄ Ｃｏｍｐａｎｙ Method and system for collecting light using total internal reflection
JP2017529526A (en) * 2014-08-20 2017-10-05 リサーチ トライアングル インスティテュート Apparatus, system and method for particle detection

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016522893A (en) * 2013-04-26 2016-08-04 ベクトン・ディキンソン・アンド・カンパニーＢｅｃｔｏｎ， Ｄｉｃｋｉｎｓｏｎ Ａｎｄ Ｃｏｍｐａｎｙ Method and system for collecting light using total internal reflection
JP2017529526A (en) * 2014-08-20 2017-10-05 リサーチ トライアングル インスティテュート Apparatus, system and method for particle detection

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