Particle Characterization
Greetings from your friends at HORIBA Instruments!
Our latest edition welcomes you attend Webinars on particle characterization techniques in the food industry and an introduction to the dynamic light scattering technique, download new application notes on measuring zeta potential of proteins using electroacoustics, particle size analysis of drilling fluids, and size and shape characterization of coffee, and announces design improvements to the PowderJet dry powder feeder for the LA-950.
Webinar on Dynamic Light Scattering
Please join us for a webinar presentation Thursday, December 3rd at 1:30 PM Eastern (10:30 AM Pacific) on the characterization of size and stability for proteins, polymers, macromolecules, and nanoparticles using Dynamic Light Scattering and Acoustic Zeta Potential.
Dynamic Light Scattering is a useful and popular technique to characterize nano-scale particles and macromolecules. In combination with Acoustic Spectroscopy Zeta Potential analysis, DLS provides a powerful solution for determining stability and function. We will discuss the techniques of DLS and Acoustic Zeta Potential as well as investigate and interpret data obtained on the HORIBA LB-550 and DT-300 analyzers.
Topics covered include:
- Why particle size is important for small particles/macromolecules
- Why zeta potential is a useful indicator of stability
- An introduction to DLS and Acoustic Spectroscopy
- Data interpretation of a typical protein
As always, attending the Webinar is easy and free of charge. We will be glad to help you understand how to attend. Our Particle Sizing Experts will hold a Q&A session after the presentation to answer any questions.
Webinar on Particle Characterization in the Food Industry
Please join us for our webinar Wednesday, December 16th at 1 PM Eastern (10:00 AM Pacific) on particle characterization techniques and applications in the food industry. Topics covered include:
- Why particle size is important for food products
- Techniques including light scattering and image analysis
- Applications including coffee, chocolate, sugar, flavor emulsions, and others
As always, attending the Webinar is easy and free of charge. We will be glad to help you understand how to attend. Our Particle Sizing Experts will hold a Q&A session after the presentation to answer any questions.
view the invitation to the Webinar on Particle Characterization in the Food Industry.
Measuring Zeta Potential of Proteins
Zeta potential is a key physical parameter that describes surface charge on proteins. Although there has been interest in measuring the zeta potential of proteins for many years, the measurements are often difficult due to a variety of reasons including the "cooking" of proteins on the cell electrodes when using light scattering techniques. Electro acoustics provides an alternative approach for non-destructive measurement of protein zeta potential without sample preparation. This application note describes a study of investigating the zeta potential of bovine serum albumin vs. pH using electroacoustics.
Application Note AN184 Zeta Potential of Bovine Serum Albumin (BSA) Protein (You need to be logged in).
Particle Size Analysis of Drilling Fluids
The particle size distribution of drilling fluid is an important physical parameter along with other properties such as density and rheology. Although particle size is recognized as being a critical parameter, older techniques such as sieving and sedimentation have long been used in this industry. Laser diffraction is becoming more popular due to the increased amount of information generated by this analysis technique which is quick and easy to use. This application note explains why particle size distribution is critical and how HORIBA laser diffraction analyzers can be used to measure the particle size distribution of drilling fluids. Two diffraction analyzers were used in the study, the LA-950 and the more portable LA-300. Both models offer unique advantages for these samples.
Application Note AN185 on Particle Size Analysis of Drilling Fluids (You need to be logged in).
Size and Shape Analysis of Coffee
Few products are so involved in particle sizing from start to finish as coffee. From the classification of the raw, green coffee bean to the relationship between brew quality and the size of ground coffee beans, the quality of the final coffee drink is directly related to particle size and sometimes shape and density as well. The CAMSIZER dynamic image analyzer and LA-950 laser diffraction analyzer offer undeniable advantages in measurement accuracy, quality, and speed over historic sieving techniques.
Application Note AN186 Size and Shape Analysis of Coffee (You need to be logged in).
Announcing Improvements to the PowderJet Dry Powder Feeder
The best dry powder feeder on the market just got better thanks to three design improvements.
The upper air pressure limit has been increased from 3 to 4 bar (approx. 60 psi). This supplies more energy to help disperse strongly agglomerated particles.
The user can now select any pressure desired between 0 and 4 bar. This allows finer tuning of the method based on the optimum pressure for dispersion without breaking particles.
The exact air pressure used (as opposed to the air pressure selected) is recorded in the result. There's negligible difference between the pressure selected and the pressure used so this feature is mostly present for peace of mind.
Remember that these improvements expand upon the existing feature set of the state of the art PowderJet including:
- Automatic Feedback Control adjusts the speed of powder flow in real-time to produce unbeatable measurement precision.
- Auto-Measurement allows you to set the measurement conditions once and then click a single button to automatically obtain a particle size result.
- Small and Large Particle accessories allow the user to size powders as small as 100 nm and as large as 3 mm.
All new PowderJet accessories shipping as of January 2009 will automatically have these new features.
Upcoming Customer Training Courses
The HORIBA Particle Characterization Group will continue to offer the highly regarded "Boot Camp" user training courses in 2010. Featuring expert trainers and an emphasis on hands-on time with the instruments, the Boot Camps remain a staple of HORIBA's commitment to customer service and providing superior training along with state of the art analyzers.
The next Boot Camp will be held for the LA-series instruments (laser diffraction) and will be held in beautiful Irvine, California, February 3-4, 2010. Come enjoy the Southern California "winter"!
Click for information on "Boot Camp" customer training course registration.
Thank you for your response
Thank you to all who responded to our annual customer service survey! Every participant helped us to improve our customer service by sharing with us what we've done right and what could be improved upon.
Every person who submitted a survey was entered into a random drawing to win an iPod Touch. The winners are:
Stephen Carkeek, American Chemet Corp
Terry Schantz, JM Huber HDG Plant
Thanks again to everyone who provided constructive feedback!
Formularz logowania
Forgot Password?
Having trouble login in? Please click here and we will send a new password. If you are still having trouble, contact us at web_member@horiba.com.
Not a member yet?
Register and receive access to advanced information, including Application Data Sheets, Application Notes, Brochures, Links to External Articles, Manuals, Software Downloads, Software Updates. When you register you will also receive periodic updates by e-mail. Create a new account.