Dynamic Light Scattering
Particle Size

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

Seiving
Particle Size

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.

Particle Size

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

SPOS/LO for Particle Size and Count
Particle Size

SPOS/LO for Particle Size and Count

Single Particle Optical Sensing (SPOS) is widely used across a variety of industries due to its excellent resolution, wide dynamic range and high accuracy. The term SPOS and Light Obscuration (LO) are often used interchangeably in the particle

demystifying zeta potential
Particle Size

Demystifying Zeta Potential

Confused on what a zeta potential measurement is and when it’s useful? You are not alone. In this helpful Q and A, Laboratory Division Manager Ryan Keefer walks us through the basics of zeta potential, points out factors

Particle Size

FAQs on Particle Size Distribution Results from Particle Counters

Have you ever requested a particle size distribution test from PTL and received two sets of data: number-weighted and volume-weighted—only to wonder why and which one is better? A fish tank analogy helps explain the difference. Picture a

Particle Size

Our Roots as Experts in PM10 and PM2.5 Testing

Did you know Particle Technology Labs began as a testing service for companies needing to meet EPA environmental safety standards? While we are most known today for our testing for the pharmaceutical industry and our commitment to cGMP

Particle Size

Vaccine Facts and the Role of Particle Size in Antigen Uptake

With more people getting their COVID-19 vaccines, a larger discourse on vaccination is occurring. Many questions are being presented. How are vaccines made? What is the safety of a vaccine? How is the efficacy of a vaccine determined?

Particle Size

Standard Methods for Examination of Water and Wastewater at Particle Technology Labs

The water industry is one of many industries that relies on PTL for important scientific data. Flood studies, filter determination, and verifying compliance with water quality standards are just a few ways that water analysis results are utilized.