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Q: How to measure zeta potential ( Answered 5 out of 5 stars,   0 Comments )
Question  
Subject: How to measure zeta potential
Category: Science > Chemistry
Asked by: tlimg-ga
List Price: $20.00
Posted: 05 Jul 2003 19:21 PDT
Expires: 04 Aug 2003 19:21 PDT
Question ID: 225532
I'm trying to find out the zeta potential of cerium oxide. 

This article talks about the subject in detail:
http://www.ceramicindustry.com/CDA/ArticleInformation/features/BNP__Features__Item/0,2710,73678,00.html
It recommends ZetaProbe from http://www.colloidal-dynamics.com

Are there other ways to measure zeta potential? Do you know any labs
will do this for a fee? Thank you.

Request for Question Clarification by bobbie7-ga on 05 Jul 2003 19:46 PDT
Hello tlimg-ga,  
 
Thank you for your question.

CSL - Colloidal Science Laboratory, Inc. measures Zeta Potential  for
$125.


Laboratory Services 

Particle Size Distribution  $200 
Zeta Potential  $125 
Ultra Centrifuge Separation $75 
Continuous flow centrifuge processing  $125/hr 
ICP Measurement of total metal 1  $100 
ICP Measurement of ionic metal $150 
Low ionic pH measurement  $35 
Conductivity measurement $25 
Turbidity measurement $25
http://www.colloidalsciencelab.com/LabServicePrices.html


They use the Malvern Zetasizer 3000HSA - Photon Correlation
Spectrometer (PCS) to measure Zeta Potential

Malvern Zetasizer 3000HSA - Photon Correlation Spectrometer (PCS) 
The Zetasizer provides comprehensive particle size and zeta potential
measurement capability.
http://www.colloidalsciencelab.com/Equipment/Malvern.html


 “Zeta potential is a measure of the magnitude of the repulsion or
attraction between particles in a colloid. Its measurement brings
detailed insight into the dispersion mechanism and is the key to
electrostatic dispersion control.
http://www.colloidalsciencelab.com/LabCapabilities.html


Contact Information:

Colloidal Science Laboratory, Inc. 
213 Irick Road 
Westampton, NJ 08060 
609-267-2065 
Email to: info@ColloidalScienceLab.com
http://www.colloidalsciencelab.com/contact.html

Tlimg, could you please confirm if this is what you're looking for?


Thanks
Bobbie7-ga

Clarification of Question by tlimg-ga on 06 Jul 2003 05:48 PDT
Hello Bobbie7-ga,

Yes, you're on the right track. It would be nice if you could provide
one or two more of this type of lab. Thank you.

tlimg-ga
Answer  
Subject: Re: How to measure zeta potential
Answered By: bobbie7-ga on 06 Jul 2003 07:11 PDT
Rated:5 out of 5 stars
 
Hello Tlimg,   


In response to you clarification, here are more lab services that
measure zeta potential.


==============================================


Beckman Coulter - Particle Characterization Lab Services 

“Beckman Coulter's Science & Technology Laboratory (part of the
Particle Characterization group) has a number of Beckman Coulter
instruments available for characterization of particulate materials.
Standard ASTM procedures as well as procedures developed by Beckman
Coulter for the investigation of powders, emulsions, colloids and
biological samples can be performed by the laboratory staff of
scientists. The Particle Characterization Lab is available for
applications development and laboratory services.”

“The trained professionals at the Particle Characterization lab have a
vast amount of experience on a wide variety of materials. The Beckman
Coulter Particle Characterization lab, as well as the entire
organization is committed to working with customers to resolve all of
their particle analysis needs.”

“For more information on any specific type of analysis, or if you are
not sure what type of characterization is correct for your
application, look at the listed services that are offered, or just
contact the Particle Characterization lab at E-mail:
particle.lab@coulter.com

Services:
-Particle Size 
-Zeta Potential 
-Surface Area, Pore Size Distributions

Beckman Coulter
http://www.beckman.com/customersupport/cu3.asp


Zeta Potential and Electrophoretic Mobility Measurements


“Two of Beckman Coulter's instruments, the N4 Plus™ particle size
analyzer, and the COULTERŪ DELSA™ 440SX zeta potential analyzer, can
be used separately or together to determine the stability of colloidal
suspensions. Applications include pigments, liposomes, proteins, paper
pulp and many others. The N4 Plus "Unimodal Fingerprint" method can
detect the presence of contaminants in the sample, while the DELSA
440SX's zeta potential analysis can determine whether the suspension
is stable or is likely to agglomerate.”

COULTERŪ DELSA 440SX
“This is the only commercial zeta-potential analyzer that performs a
simultaneously multi-angle measurement. The multi-angle feature
provides information on the relative amplitude of each mobility mode.
The use of four angles simultaneously also assures that peaks are
actually measurements of particle mobility and not noise artifacts.”

Beckman Coulter
http://www.beckman.com/products/instrument/partChar/technology/ZetaPotential.asp


==============================================


Micromeritics' Materials Analysis Lab. 


The Materials Analysis Laboratory performs zeta potential and other
types of analyses:

Volume and Density 
Particle Size Distribution (PSD) and Particle Concentration 
Microscopy 
Specific Surface Area by Physical Adsorption 
Mesopore and Micropore Volume/Size Distributions by Physical
Adsorption
Chemisorption 
Macropore and Mesopore Volume/Size Distribution by Mercury Intrusion
Porosimetry (MIP)
Contact Angle 

Electrophoretic Mobility and Zeta Potential 

Custom and Other Services 
Ancillary Information
http://www.micromeritics.com/lab_services/


Please complete the sample submission form and include it with your
sample.
http://www.micromeritics.com/lab_services/sample_submission_form.aspx


You will also need to review the sample submission requirements.
http://www.micromeritics.com/lab_services/sample_submission_requirements.aspx


Contact Information:
http://www.micromeritics.com/contact/contact_information.aspx



==============================================


Group Scientific Pty Ltd
Laboratory Services

Using state-of-the-art instruments in our applications laboratory we
can provide:

“All kinds of Scanning Probe Microscopy measurements including: AFM,
STM, Magnetic & Electric Force Microscopy.

Particle Size Analysis in the size range 3nm to 2,500mm. 

Zeta potential and electrophoretic mobility measurements.”

Please contact us for competitive pricing and rapid turn around:
 
Group Scientific Pty Ltd
 ph: (08)8260 8114
 
Innovation House
 FAX: (08)8260 8115
 
Technology Park
 email: sales@group-scientific.com.au

 
Adelaide, SA 5095 AUSTRALIA
http://www.group-scientific.com.au/


===============================


Beestman Formulations Consulting.

For access to these technologies or other services contact Beestman
Formulations Consulting.
E-mail: gbeestman@beestmanconsulting.com

Laboratory particle characterization testing - size, zeta potential,
rheology, surface area, density.

http://www.beestmanconsulting.com/Services_Page.htm


==============================================


Quantachrome is also recognized as an excellent resource for
authoritative analysis of your samples in our fully equipped
state-of-the-art particle characterization laboratory.
http://www.quantachrome.com/About-Quantachrome.htm


Complete Fine Particle Characterization Laboratory Services

“The Quantachrome Analytical Laboratory offers a very broad range of
analytical services in support of production, research and quality
assurance requirements for abrasives, desiccants, cements,
pharmaceuticals, powder metallurgy, carbon blacks, ferrites, toners,
ceramics, catalysts and dozens of other fine particle applications.”


“To submit a sample to the Quantachrome Analytical Laboratory, simply
print the Laboratory Submission Form,
http://www.quantachrome.com/labform.pdf


After filling in all requested information, sign and send the form
with the sample to:


Particle Characterization Laboratory
Quantachrome Instruments
1900 Corporate Drive
Boynton Beach, Florida 33426 USA Contact information:
Phone: 1-561/731-4999   Fax: 1-561/732-9888 U.S. and Canada:
1-800-989-2476
or e-mail:QC.Support@Quantachrome.com
http://www.quantachrome.com/Lab-Services.htm
 

==============================================


Here is the lab service that I gave you previously.


CSL - Colloidal Science Laboratory, Inc. measures Zeta Potential  for
$125. 
 
 
Laboratory Services  
 
Particle Size Distribution  $200  
Zeta Potential  $125  
Ultra Centrifuge Separation $75  
Continuous flow centrifuge processing  $125/hr  
ICP Measurement of total metal 1  $100  
ICP Measurement of ionic metal $150  
Low ionic pH measurement  $35  
Conductivity measurement $25  
Turbidity measurement $25 
http://www.colloidalsciencelab.com/LabServicePrices.html 
 
 
They use the Malvern Zetasizer 3000HSA - Photon Correlation
Spectrometer (PCS) to measure Zeta Potential
 
Malvern Zetasizer 3000HSA - Photon Correlation Spectrometer (PCS)  
The Zetasizer provides comprehensive particle size and zeta potential
measurement capability.
http://www.colloidalsciencelab.com/Equipment/Malvern.html 
 
 
“Zeta potential is a measure of the magnitude of the repulsion or
attraction between particles in a colloid. Its measurement brings
detailed insight into the dispersion mechanism and is the key to
electrostatic dispersion control.
http://www.colloidalsciencelab.com/LabCapabilities.html 
 
 
Contact Information: 
 
Colloidal Science Laboratory, Inc.  
213 Irick Road  
Westampton, NJ 08060  
609-267-2065  
Email to: info@ColloidalScienceLab.com 
http://www.colloidalsciencelab.com/contact.html


==============================================


Search Criteria:

Laboratory services OR service Zeta Potential  
Zeta potential measurement OR measuring service


I hope this helps. If anything is unclear please request
clarification.


Best Regards,
Bobbie7-ga

Request for Answer Clarification by tlimg-ga on 07 Jul 2003 20:02 PDT
Hello bobbie7-ga,

I just looked Beckman Coulter's website and it seems they don't offer
lab services; or they only offer their services to their customers.
Would you be able to provide another one lab service that will do this
type of work? Thank you.

Clarification of Answer by bobbie7-ga on 07 Jul 2003 20:15 PDT
Hello Tlimg,    
 
I'll search for another lab service as requested.

Thanks

--Bobbie7

Clarification of Answer by bobbie7-ga on 07 Jul 2003 20:23 PDT
Dear Tlimg,

I didn't realize that Beckman Coulter only provided  Lab Services to
their own clients. Perhaps if you get in touch with them it may be
possible to do your analysis.

In any case I located one more lab service which I sincerely hope
meets your needs.

Analytical Services, Inc. (ASI). 

“ASI provides comprehensive environmental microbiological services
throughout the United States and abroad.”
http://www.analyticalservices.com/about.html


“Zeta potential is measured using a Zeta-Meter, which passes an
electrical current through a water sample contained within a cell.
Colloids in the sample with a net negative charge will gravitate
towards the anode (positive pole); conversely, colloids with net
positive charges will move towards the cathode (negative pole). The
rate of movement is an indication of the strength of the charge on the
colloids. The particles are viewed with a microscope to determine the
relative speed of migration and the ZP is calculated from the rate of
movement.”
http://www.analyticalservices.com/drinking_water/water_treament_plant_optimization.html


P.O. Box 515 (mailing)
130 Allen Brook Lane (shipping)
Williston, VT 05495 USA
Toll Free: 800-723-4432
Local: 802-878-5138
Fax: 802-878-6765
info@analyticalservices.com

Best wishes,
Bobbie7

Clarification of Answer by bobbie7-ga on 07 Jul 2003 21:04 PDT
Hello Tlimg,  

I located  another lab service. 


Malvern Instruments' Paid analysis laboratories 

“Malvern Instruments' in-house laboratories, in the UK, US and France,
provide a unique resource for those customers requiring sample
analysis services and advice on method development.”


“Our laboratories can characterize the size distribution, shape
distribution and zeta potential of particles, in samples over a wide
range of concentrations and particle size using the full range of
instrumentation techniques available to them.”

These include: 
Laser diffraction (wet, dry and aerosol dispersions). 
Photon correlation spectroscopy (for colloidal suspension). 
Static light scattering (molecular weight determination). 
Acoustic spectroscopy. 
Zeta potential measurement (aqueous and non-aqueous, iso-electric
point determinations).
Automated vision system (wet and dry image analysis).  
 
“Our on-site experts can also advise and collaborate on more complex
characterization requirements. For more information please contact our
Applications team at apps@malvern.co.uk
http://www.malvern.co.uk/malvern/rw_malvern.nsf/vwa_docref/Paid%20analysis

Request for Answer Clarification by tlimg-ga on 08 Jul 2003 16:56 PDT
Hello bobbie7,

I contacted one of the labs today they told me that both zeta
potential and Concentrations of trace metals determined by ICPS are
for colliods, not for powders. Do you know anything about the tests?
If not, don't worry about it. Thanks anyway.

Clarification of Answer by bobbie7-ga on 08 Jul 2003 17:40 PDT
Good evening Tlimg,

The truth is that I don't have in depth knowledge about the tests.

In your other question I gave you information about WantLab.com:

I suggest that you get in touch with them. They may be able to help you further.

WantLab.com, Inc. 
12808 Topping Meadows St. Louis, MO 63131  
Toll Free1-877-WantLab (877-926-8522)   
Info@WantLab.com 

WantLab.com – Find a Lab Fast 
 
“Do you currently have a need for Analytical Laboratory Services? Are
you trying to solve a problem in manufacturing, product quality,
formulation or processing? Would you like to receive several
quotations from labs across the United States? If so, please complete
the forms below and submit your Request For Quote (RFQ). Your RFQ will
be matched with the capabilities of over 7000 labs worldwide at
absolutely no cost to you! “
http://www.wantlab.com/rfq.htm 

Best regards,
Bobbie7
tlimg-ga rated this answer:5 out of 5 stars
Fast turnaround and good research.

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