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

Laser Diffraction: Liquid vs. Dry Applications for Dry Materials
Laser Diffraction

Laser Diffraction: Liquid vs. Dry Applications for Dry Materials

Laser diffraction is an excellent technique for determining particle size as it allows the user to measure particle size on both a liquid and dry basis. When working with dry materials choosing the most appropriate way to disperse

Physical Measurement

Water Woes or Water Win? Probing Water Vapor Uptake and Release with Dynamic Vapor Sorption (DVS)

Water is one of the most important substances on earth, yet it can also be the source of some major headaches throughout the lifecycle of a product. Uptake of moisture from the environment could cause unwanted changes in

Customer Service

Top Tips for the Best Service Lab Analysis

Particle Technology Labs receives an average of 350 samples per week. What can you do to ensure your samples are handled quickly and analyzed accurately? We’ve put together a few tips to help the process run smoothly. 1.

demystifying zeta potential
Physical Measurement

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

Man conducting gas adsorption test at PTL
Surface Area

FAQ’s on Gas Adsorption Surface Area Measurements

Have you found yourself confused about how best to determine the surface area of your sample?  How does the analysis work? What does “BET” mean? How many points do I need to collect? What is the appropriate analysis

PTL News

Industry Leader Particle Technology Labs Marks 30th Anniversary

Independent Lab Provides Scientific Data for Making Big Decisions This year marks Particle Technology Labs’ (PTL) 30th anniversary as a premier particle characterization research and advisory company. Founded in March 1992, PTL serves as a trusted advisor to the world’s

Quality Assurance and Methods Compliance

OOS Investigations at the Contract Lab

Out of specification (OOS) results are bound to occur at a testing laboratory. It is important that your contract lab investigates the unexpected results in a timely and thorough way. An OOS result occurs when an analytical result

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