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

Quality Assurance and Methods Compliance

Three Things Your Particle Size Contract Lab Needs to Know to Match Your Specifications

Particle size specifications are designed to ensure raw ingredients and products perform as expected. Often, companies are required to verify that their material is meeting these specifications regardless of which supplier is used. Using a contract lab for

Pore Size

Through-Pore Galore: Face Masks, Filters, and More!

You don’t have to be a scientist to appreciate the importance of filtration in our world today. Face masks and air filtration systems have been employed for protection against a pathogen in a pandemic and against harmful particulates

Quality Assurance and Methods Compliance

What Is Method Validation and Might You Need It?

By Shane Hill Confidence, reliability—ultimately peace of mind. In short, this is the takeaway following an analytical test method validation. Do you work in pharmaceuticals, cosmetics, or the environmental realm? All of these fields, and more, benefit greatly

Image Analysis

Using Image Analysis to Answer Your Most Challenging Particle Characterization Questions

The possibilities are endless when it comes to image analysis. Over the years, the experts at Particle Technology Labs have developed and validated countless particle characterization methods using microscopic image analysis, and the wealth of information from these tests

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

Customer Service

Blessed. Thankful. These Words are More Than Cliches for a PTL Team Member

Kelli Hubert, Particle Technology Labs’ Customer Service Manager, highly values her work and her colleagues I can genuinely say that I am blessed to work at Particle Technology Labs and thankful for my coworkers. Without a doubt, I

Laser Diffraction

Testing Particle Size by Laser Diffraction

Laser diffraction is a frequently requested technique in the particle characterization industry, but how do you know if it’s right for your material and process? The experts at Particle Technology Labs have years of experience evaluating powders, semi-solid