DE69739434D1 - Verfahren und Vorrichtung zur Charakterisierung von Suspensionen mittels akustischer Signale - Google Patents

Verfahren und Vorrichtung zur Charakterisierung von Suspensionen mittels akustischer Signale

Info

Publication number
DE69739434D1
DE69739434D1 DE69739434T DE69739434T DE69739434D1 DE 69739434 D1 DE69739434 D1 DE 69739434D1 DE 69739434 T DE69739434 T DE 69739434T DE 69739434 T DE69739434 T DE 69739434T DE 69739434 D1 DE69739434 D1 DE 69739434D1
Authority
DE
Germany
Prior art keywords
characterizing
suspensions
acoustic signals
acoustic
signals
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
DE69739434T
Other languages
English (en)
Inventor
Gerard Faber
Hugo Cornelis Lucas Vos
Kroon Mathilde Gertrudis Maria De
Arno Willem Frederik Volker
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.)
Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
Original Assignee
Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
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 Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO filed Critical Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
Application granted granted Critical
Publication of DE69739434D1 publication Critical patent/DE69739434D1/de
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
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/52—Processing the detected response signal, e.g. electronic circuits specially adapted therefor using inversion methods other that spectral analysis, e.g. conjugated gradient inversion
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
    • G01N15/02—Investigating particle size or size distribution
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/02—Analysing fluids
    • G01N29/032—Analysing fluids by measuring attenuation of acoustic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/11—Analysing solids by measuring attenuation of acoustic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/24—Probes
    • G01N29/2456—Focusing probes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/36—Detecting the response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/40—Detecting the response signal, e.g. electronic circuits specially adapted therefor by amplitude filtering, e.g. by applying a threshold or by gain control
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/4409—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by comparison
    • G01N29/4427—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by comparison with stored values, e.g. threshold values
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/4472—Mathematical theories or simulation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/01—Indexing codes associated with the measuring variable
    • G01N2291/015—Attenuation, scattering
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/024—Mixtures
    • G01N2291/02408—Solids in gases, e.g. particle suspensions
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/024—Mixtures
    • G01N2291/02416—Solids in liquids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02818—Density, viscosity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/04—Wave modes and trajectories
    • G01N2291/044—Internal reflections (echoes), e.g. on walls or defects
DE69739434T 1996-04-10 1997-04-10 Verfahren und Vorrichtung zur Charakterisierung von Suspensionen mittels akustischer Signale Expired - Lifetime DE69739434D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1002836 1996-04-10
NL1003595A NL1003595C2 (nl) 1996-04-10 1996-07-15 Werkwijze en inrichting voor het karakteriseren van suspensies.

Publications (1)

Publication Number Publication Date
DE69739434D1 true DE69739434D1 (de) 2009-07-16

Family

ID=26642374

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69739434T Expired - Lifetime DE69739434D1 (de) 1996-04-10 1997-04-10 Verfahren und Vorrichtung zur Charakterisierung von Suspensionen mittels akustischer Signale

Country Status (6)

Country Link
US (2) US6029507A (de)
EP (2) EP2075579B1 (de)
CA (1) CA2202323C (de)
DE (1) DE69739434D1 (de)
NL (1) NL1003595C2 (de)
NO (1) NO322667B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110186818A (zh) * 2019-05-24 2019-08-30 上海理工大学 利用光声技术测量纳米溶液颗粒粒度的方法

Families Citing this family (96)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19944047C2 (de) * 1999-09-14 2003-09-25 Schubert & Salzer Control Syst Vorrichtung zur Messung der Konzentration oder Dichte sowie von Partikeln
US6481268B1 (en) 1999-10-12 2002-11-19 Baker Hughes, Inc. Particle measurement by acoustic speckle
EP1121973B1 (de) * 2000-02-01 2004-10-27 APV Homogenisers AS Intelligente Qualitätsmessung und System zur Überwachung
US9772311B2 (en) 2000-07-14 2017-09-26 Acosense Ab Active acoustic method for predicting properties of process fluids comprising solid particles or gas/liquid volumes based on their size distribution and concentration
SE516979C2 (sv) * 2000-07-14 2002-03-26 Abb Ab Aktiv akustisk spektroskopi
SE516861C3 (sv) * 2000-07-14 2002-04-17 Abb Ab Raffinörstryrning
US6487894B1 (en) * 2000-08-17 2002-12-03 Dispersion Technology, Inc. Method for determining particle size distribution and mechanical properties of soft particles in liquids
US6910367B1 (en) * 2000-10-23 2005-06-28 Dispersion Technology, Inc. Method for determining particle size distribution and structural properties of concentrated dispersions
US20020064809A1 (en) * 2000-11-29 2002-05-30 Mutz Mitchell W. Focused acoustic ejection cell sorting system and method
US6893836B2 (en) 2000-11-29 2005-05-17 Picoliter Inc. Spatially directed ejection of cells from a carrier fluid
US20020064808A1 (en) * 2000-11-29 2002-05-30 Mutz Mitchell W. Focused acoustic energy for ejecting cells from a fluid
US6849423B2 (en) 2000-11-29 2005-02-01 Picoliter Inc Focused acoustics for detection and sorting of fluid volumes
NL1020714C2 (nl) * 2002-05-30 2003-12-02 Tno Ultrasone karakterisatie van hoge concentratie deeltjes.
US7838296B2 (en) * 2002-08-28 2010-11-23 Separation Technology, Inc. Methods and apparatus for ultrasonic determination of red blood cell indices
US7047809B2 (en) * 2003-01-21 2006-05-23 Applied Sonics, Incorporated Ultrasonic monitor of material composition and particle size
US7140239B2 (en) * 2003-03-18 2006-11-28 Battelle Memorial Institute System and technique for ultrasonic characterization of settling suspensions
NL1024984C2 (nl) * 2003-12-10 2005-06-13 Tno Werkwijze en inrichting voor het verkrijgen van informatie over de grootteverdeling van macroscopische deeltjes in een vloeistof.
US7114375B2 (en) * 2004-01-13 2006-10-03 Battelle Memorial Institute Process monitoring and particle characterization with ultrasonic backscattering
WO2006055449A2 (en) * 2004-11-15 2006-05-26 Massachusetts Institute Of Technology System and method for ultrasonic measuring concentration of particle properties
US9109433B2 (en) 2005-08-01 2015-08-18 Baker Hughes Incorporated Early kick detection in an oil and gas well
US8794062B2 (en) * 2005-08-01 2014-08-05 Baker Hughes Incorporated Early kick detection in an oil and gas well
US7523640B2 (en) * 2005-08-01 2009-04-28 Baker Hughes Incorporated Acoustic fluid analyzer
US7614302B2 (en) * 2005-08-01 2009-11-10 Baker Hughes Incorporated Acoustic fluid analysis method
US20090158821A1 (en) * 2007-12-20 2009-06-25 General Electric Company Devices, methods and systems for measuring one or more characteristics of a suspension
US20090158822A1 (en) * 2007-12-20 2009-06-25 General Electric Company Devices, methods and systems for measuring one or more characteristics of a biomaterial in a suspension
DE102008014300A1 (de) 2008-03-06 2009-09-10 Technische Universität Dresden Verfahren und Vorrichtung zur Bestimmung der Eigenschaften von Stoffgemischen
US8691145B2 (en) 2009-11-16 2014-04-08 Flodesign Sonics, Inc. Ultrasound and acoustophoresis for water purification
EP2582631A4 (de) 2010-06-16 2016-05-25 Flodesign Sonics Inc System zur entsalzung phononischer kristalle und verwendungsverfahren dafür
DE102010031129A1 (de) * 2010-07-08 2012-01-12 Endress + Hauser Flowtec Ag Ultraschall-Partikelmesssystem
DE102010031128A1 (de) * 2010-07-08 2012-01-12 Endress + Hauser Flowtec Ag Ultraschall-Partikelmesssystem
US8679338B2 (en) 2010-08-23 2014-03-25 Flodesign Sonics, Inc. Combined acoustic micro filtration and phononic crystal membrane particle separation
US9421553B2 (en) 2010-08-23 2016-08-23 Flodesign Sonics, Inc. High-volume fast separation of multi-phase components in fluid suspensions
US8694271B2 (en) 2010-12-03 2014-04-08 Hema-Q, Inc. Apparatus and method for non invasive measurement of properties of a fluid flowing in a flexible tubing or conduit
US8844359B2 (en) 2010-12-03 2014-09-30 Hema-Q, Inc. Apparatus for noninvasive measurement of properties of a fluid flowing in a tubing having a smaller inner diameter passage
US9283315B2 (en) 2011-02-08 2016-03-15 Fresenius Medical Care Holdings, Inc. Apparatus and method for real time measurement of a constituent of blood to monitor blood volume
US8714017B2 (en) 2011-11-15 2014-05-06 Hema-Q, Inc. Apparatus for non-invasive determination of sound velocity in a liquid and determining a parameter of the liquid from the sound velocity
US9366133B2 (en) 2012-02-21 2016-06-14 Baker Hughes Incorporated Acoustic standoff and mud velocity using a stepped transmitter
US9458450B2 (en) 2012-03-15 2016-10-04 Flodesign Sonics, Inc. Acoustophoretic separation technology using multi-dimensional standing waves
US10953436B2 (en) 2012-03-15 2021-03-23 Flodesign Sonics, Inc. Acoustophoretic device with piezoelectric transducer array
US9752114B2 (en) 2012-03-15 2017-09-05 Flodesign Sonics, Inc Bioreactor using acoustic standing waves
US9796956B2 (en) 2013-11-06 2017-10-24 Flodesign Sonics, Inc. Multi-stage acoustophoresis device
US9752113B2 (en) 2012-03-15 2017-09-05 Flodesign Sonics, Inc. Acoustic perfusion devices
US10370635B2 (en) 2012-03-15 2019-08-06 Flodesign Sonics, Inc. Acoustic separation of T cells
US11179747B2 (en) 2015-07-09 2021-11-23 Flodesign Sonics, Inc. Non-planar and non-symmetrical piezoelectric crystals and reflectors
US10689609B2 (en) 2012-03-15 2020-06-23 Flodesign Sonics, Inc. Acoustic bioreactor processes
US9822333B2 (en) 2012-03-15 2017-11-21 Flodesign Sonics, Inc. Acoustic perfusion devices
US9745548B2 (en) 2012-03-15 2017-08-29 Flodesign Sonics, Inc. Acoustic perfusion devices
US9416344B2 (en) 2012-03-15 2016-08-16 Flodesign Sonics, Inc. Bioreactor using acoustic standing waves
US9950282B2 (en) 2012-03-15 2018-04-24 Flodesign Sonics, Inc. Electronic configuration and control for acoustic standing wave generation
US9272234B2 (en) 2012-03-15 2016-03-01 Flodesign Sonics, Inc. Separation of multi-component fluid through ultrasonic acoustophoresis
US9567559B2 (en) 2012-03-15 2017-02-14 Flodesign Sonics, Inc. Bioreactor using acoustic standing waves
US9623348B2 (en) 2012-03-15 2017-04-18 Flodesign Sonics, Inc. Reflector for an acoustophoretic device
US10322949B2 (en) 2012-03-15 2019-06-18 Flodesign Sonics, Inc. Transducer and reflector configurations for an acoustophoretic device
US9457302B2 (en) 2014-05-08 2016-10-04 Flodesign Sonics, Inc. Acoustophoretic device with piezoelectric transducer array
US10704021B2 (en) 2012-03-15 2020-07-07 Flodesign Sonics, Inc. Acoustic perfusion devices
US10040011B2 (en) 2012-03-15 2018-08-07 Flodesign Sonics, Inc. Acoustophoretic multi-component separation technology platform
US10967298B2 (en) 2012-03-15 2021-04-06 Flodesign Sonics, Inc. Driver and control for variable impedence load
US9340435B2 (en) 2012-03-15 2016-05-17 Flodesign Sonics, Inc. Separation of multi-component fluid through ultrasonic acoustophoresis
US9783775B2 (en) 2012-03-15 2017-10-10 Flodesign Sonics, Inc. Bioreactor using acoustic standing waves
US9688958B2 (en) 2012-03-15 2017-06-27 Flodesign Sonics, Inc. Acoustic bioreactor processes
US9422328B2 (en) 2012-03-15 2016-08-23 Flodesign Sonics, Inc. Acoustic bioreactor processes
US10737953B2 (en) 2012-04-20 2020-08-11 Flodesign Sonics, Inc. Acoustophoretic method for use in bioreactors
US11324873B2 (en) 2012-04-20 2022-05-10 Flodesign Sonics, Inc. Acoustic blood separation processes and devices
WO2014210046A1 (en) 2013-06-24 2014-12-31 Flodesign Sonics, Inc. Fluid dynamic sonic separator
US9745569B2 (en) 2013-09-13 2017-08-29 Flodesign Sonics, Inc. System for generating high concentration factors for low cell density suspensions
CA2935960C (en) 2014-01-08 2023-01-10 Bart Lipkens Acoustophoresis device with dual acoustophoretic chamber
US9744483B2 (en) 2014-07-02 2017-08-29 Flodesign Sonics, Inc. Large scale acoustic separation device
CN106536732B (zh) 2014-07-02 2019-12-31 弗洛设计声能学公司 具有均匀流体流的声电泳装置
US9970903B1 (en) 2014-08-28 2018-05-15 Joseph Gerardi Method and apparatus for monitoring contaminants in a fluid flow
US9675906B2 (en) 2014-09-30 2017-06-13 Flodesign Sonics, Inc. Acoustophoretic clarification of particle-laden non-flowing fluids
JP2017534446A (ja) 2014-10-24 2017-11-24 ライフ テクノロジーズ コーポレイション 音響沈降化液体−液体試料精製システム
CN105738257B (zh) * 2014-12-12 2019-06-18 通用电气公司 测量方法及系统
US10106770B2 (en) 2015-03-24 2018-10-23 Flodesign Sonics, Inc. Methods and apparatus for particle aggregation using acoustic standing waves
US11377651B2 (en) 2016-10-19 2022-07-05 Flodesign Sonics, Inc. Cell therapy processes utilizing acoustophoresis
US10640760B2 (en) 2016-05-03 2020-05-05 Flodesign Sonics, Inc. Therapeutic cell washing, concentration, and separation utilizing acoustophoresis
CN107921332A (zh) 2015-04-29 2018-04-17 弗洛设计超声波公司 用于倾斜波颗粒偏转的声泳装置
CN104849183B (zh) * 2015-04-29 2017-06-09 上海理工大学 一种基于超声衰减谱的混合固体颗粒粒径和浓度的测量方法
US11021699B2 (en) 2015-04-29 2021-06-01 FioDesign Sonics, Inc. Separation using angled acoustic waves
US11708572B2 (en) 2015-04-29 2023-07-25 Flodesign Sonics, Inc. Acoustic cell separation techniques and processes
KR102603273B1 (ko) 2015-05-20 2023-11-16 프로디자인 소닉스, 인크. 정재파장에서 입자의 음향 조작
WO2016201385A2 (en) 2015-06-11 2016-12-15 Flodesign Sonics, Inc. Acoustic methods for separation cells and pathogens
US9663756B1 (en) 2016-02-25 2017-05-30 Flodesign Sonics, Inc. Acoustic separation of cellular supporting materials from cultured cells
US11459540B2 (en) 2015-07-28 2022-10-04 Flodesign Sonics, Inc. Expanded bed affinity selection
US11474085B2 (en) 2015-07-28 2022-10-18 Flodesign Sonics, Inc. Expanded bed affinity selection
CN108474763B (zh) * 2015-09-17 2022-02-11 科学研究高级委员会 用于检测浅表体液中的循环细胞的方法
DE102015116376A1 (de) 2015-09-28 2017-03-30 TIPCO Tudeshki Industrial Process Control GmbH Verfahren zum Bestimmen der Korngrößenverteilung von Granulaten in einen Förderstrom und Messeinrichtung
DE102015116379A1 (de) 2015-09-28 2017-03-30 TIPCO Tudeshki Industrial Process Control GmbH Verfahren zum Bestimmen der Korngrößenverteilung von Granulaten in einen Förderstrom und Vorrichtung zur Durchführung des Verfahrens
CN105300856B (zh) * 2015-11-11 2017-09-29 上海理工大学 基于超声阻抗谱对颗粒浓度和尺寸的测量方法
US10710006B2 (en) 2016-04-25 2020-07-14 Flodesign Sonics, Inc. Piezoelectric transducer for generation of an acoustic standing wave
US11214789B2 (en) 2016-05-03 2022-01-04 Flodesign Sonics, Inc. Concentration and washing of particles with acoustics
US11085035B2 (en) 2016-05-03 2021-08-10 Flodesign Sonics, Inc. Therapeutic cell washing, concentration, and separation utilizing acoustophoresis
WO2017214403A1 (en) 2016-06-08 2017-12-14 Eaton Corporation Fluid sensor assembly
CN110494543A (zh) 2016-10-19 2019-11-22 弗洛设计声能学公司 通过声学的亲和细胞提取
AU2018385759B2 (en) 2017-12-14 2021-10-21 Flodesign Sonics, Inc. Acoustic transducer driver and controller
DE102019123298A1 (de) * 2019-08-30 2021-03-04 Technische Universität Dresden Verfahren und Anordnung zur ortsspezifischen Charakterisierung der Phasenzusammensetzung sowie der Strömungsverhältnisse innerhalb eines Schaumvolumen
CN112255155B (zh) * 2020-10-28 2021-10-15 浙江大学 一种颗粒浓度和粒径二维分布的旋转测量系统和方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3269172A (en) * 1963-02-28 1966-08-30 Automation Ind Inc Apparatus for measuring particles in liquids
US3946600A (en) * 1973-12-26 1976-03-30 Lockheed Aircraft Corporation Acoustic emission method for detection and monitoring of corrosion
GB1585708A (en) * 1977-12-20 1981-03-11 Shell Int Research Method and means of detecting solid particles in a fluid flowing through a conduit
US4412451A (en) * 1980-05-21 1983-11-01 Outokumpu Oy Method and apparatus for the determination of the average particle size in a slurry
US4381674A (en) * 1981-06-22 1983-05-03 Micro Pure Systems, Inc. Ultrasonic detecting and identifying of particulates
US5121629A (en) * 1989-11-13 1992-06-16 E. I. Du Pont De Nemours And Company Method and apparatus for determining particle size distribution and concentration in a suspension using ultrasonics
DE69635343T2 (de) * 1995-06-19 2006-07-06 Commonwealth Scientific And Industrial Research Organisation Bestimmung der teilchengrössenverteilung in einer flüssigkeit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110186818A (zh) * 2019-05-24 2019-08-30 上海理工大学 利用光声技术测量纳米溶液颗粒粒度的方法

Also Published As

Publication number Publication date
EP2075579A3 (de) 2009-10-21
US6029507A (en) 2000-02-29
CA2202323A1 (en) 1997-10-10
EP2075579A2 (de) 2009-07-01
CA2202323C (en) 2006-06-06
US6205848B1 (en) 2001-03-27
NO971649L (no) 1997-10-13
NL1003595C2 (nl) 1997-10-14
EP0801305B1 (de) 2009-06-03
EP2075579B1 (de) 2015-09-09
EP0801305A1 (de) 1997-10-15
NO322667B1 (no) 2006-11-13
NO971649D0 (no) 1997-04-10

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