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Considerations for Stable, Consistent Results Using Laser Diffraction
Reliable and stable results with laser diffraction are achieved by understanding trends through repeat testing. At PTL, several measurements are typically done in each liquid dispersion analysis with a delay between each measurement to observe if any trending
Electronic Records and Signatures: Compliance in the 21st Century
Data integrity is crucial to assuring reliable data. For that reason, PTL has considered and implemented systems that ensure information and data security, integrity, and compliance. 21 CFR Part 11[1] is the key guidance for handling electronic records
The World of Rheology
Oils and Gels and Creams, Oh My! Ever wonder if some folks do find watching paint dry interesting? Welcome to the world of rheology! What is Rheology? The Oxford Dictionary defines rheology as, “the branch of physics that
Dynamic Light Scattering: Frequently Asked Questions
Dynamic Light Scattering (DLS), Photon Correlation Spectroscopy (PCS), or Quasi-Elastic Light Scattering (QELS) – this technique goes by many names, but what does it measure, how is it measured, and what do the results mean? From John Tyndall’s
Particle Technology Labs Launches New Branding and Website
Have you noticed? Particle Technology Labs recently launched a new brand identity and website. If you are a PTL customer, you may have already seen our new logo on PTL reports. PTL website users will find the new
An Overview of Sieving
Enmeshed in the World – An Overview of Sieving Sieving is an analytical technique that has withstood the test of time due to its excellent ability to quickly provide the particle size distribution over a wide analytical range.
The Evolution of Particle Technology Labs and a 30-Year Career
In 1992, Lisa Jandacek, a stay-at-home mom, decided to pick up a 10-hour-a-month contract work with a new sci-tech startup called Particle Technology Labs. She’d be in accounting. The founder and sole full-time employee, Richard F. Karuhn, would
Much Ado About Density: An Overview of Density for Solid Materials
Understanding the differences in density types is key to requesting the most appropriate analysis for your sample type and needs. This blog will explain some of the different density analyses for solids offered by PTL. All density types
An Introduction to Surface Area
Surface area is an important property of solids with many industrial applications. This article will cover what surface area is, what affects it, how it is determined and how does gas adsorption work in the laboratory on a
Popular Articles
Physical Measurement
What is the Difference Between Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC)
Spring is upon us, and with it comes fluctuating weather conditions! You’re enjoying some warmer days, but also a little worried how the extreme changes in temperature may affect your products. Thermal analysis can help you better understand
Pore Size
What Is Mercury Intrusion Porosimetry and When Is It Used?
You need to characterize the pore structure of your product, but you’re unsure of how best to do so. You’ve done your research and found a technique called Mercury Intrusion Porosimetry (MIP) but it’s unclear if this is
Quality Assurance and Methods Compliance
PTL now offering USP 788, USP 789 and USP 787 Testing
Particle Technology Labs is pleased to announce we are now offering USP <788> Particulate Matter in Injections testing, USP <789> Particulate Matter in Ophthalmic Solutions testing, and USP <787> Subvisible Particulate Matter in Therapeutic Protein Injections testing. Parenteral