A Closer Look at the QA/QC Samples That Ensure Data Quality

A Closer Look at the QA/QC Samples That Ensure Data Quality

When you receive your analytical report, you might notice several additional quality assurance and quality control (QA/QC) samples listed alongside your project data. These quality checks are not just routine - they are critical for validating data integrity, identifying potential interferences, and demonstrating defensibility in environmental decision-making. Below is a closer look at the most common QA/QC samples analyzed in environmental laboratories and what they can tell you about your data quality.

Soil Gas Sampling Made Easier with Merit’s Helium Shroud

Soil Gas Sampling Made Easier with Merit’s Helium Shroud

Collecting high-quality soil gas samples in the field for TO-15 analysis is essential for generating reliable data. Yet in the field, the process can be time-consuming and prone to error. With our clients’ sampling challenges in mind, Merit Laboratories designed a helium shroud that makes soil gas sampling more efficient, accurate, and reproducible — without the need for tools or field calibration.

Merit Laboratories to Present at NEMC 2025 in St. Louis

Merit Laboratories to Present at NEMC 2025 in St. Louis

We’re excited to announce that Merit Laboratories will be participating in the conference, taking place August 4th - 7th, 2025, in St. Louis, Missouri. This year’s conference theme, “Building a Quality Culture as the Foundation for Reliable Data,” underscores the importance of quality assurance and continuous improvement in environmental monitoring and measurement.

Are you being stung by Acronym Chem Fog?

Are you being stung by Acronym Chem Fog?

Have you ever reviewed a laboratory report and felt overwhelmed by acronyms like MDL, RL, LOQ, or IDL? You’re not alone. These terms are critical to understanding the sensitivity, precision, and reliability of laboratory results in environmental testing—but they can also be confusing, especially when used interchangeably or inconsistently across different labs or agencies.

Risk Assessment for PFOA and PFOS in Biosolids Released by U.S. EPA

Risk Assessment for PFOA and PFOS in Biosolids Released by U.S. EPA

The U.S. EPA released a Draft Sewage Sludge Risk Assessment for PFOA and PFOS, open for public comment. The public comment for the draft, released in January 2025, has been extended until August 14, 2025.  This draft risk assessment reflects the EPA's latest scientific understanding of the potential risks to human health

F3700 ASTM International Standard to Guide PFAS Assessments in Consumer Products Set for Release

F3700 ASTM International Standard to Guide PFAS Assessments in Consumer Products Set for Release

In an initiative to provide a structured approach for assessing the presence of PFAS in consumer products, ASTM International is set to release a new standard, F3700, which will serve as a critical guide for laboratories, manufacturers, regulatory bodies, and consumers. Developed by the ASTM Consumer Products Committee (F15), this new standard will outline best practices and methodologies for testing and analyzing PFAS in various consumer articles, ranging from cosmetics to automobiles.

California Wildfires Disaster and Environmental Cleanup

California Wildfires Disaster and Environmental Cleanup

To all of our friends and partners in California impacted by the devastating wildfires, Merit Laboratories is here to support you. When wildfires ravage communities, natural landscape, and places we call home, the impact is major. Lives are interrupted while homes, schools, and businesses are destroyed. Another significant impact of wildfires is environmental contamination. 

The U.S. EPA Expands Toxics Release Inventory (TRI) to Include Nine Additional PFAS Compounds: Implications and What You Need to Know

The U.S. EPA Expands Toxics Release Inventory (TRI) to Include Nine Additional PFAS Compounds: Implications and What You Need to Know

The U.S. Environmental Protection Agency (EPA) continues to address the growing concerns over PFAS by adding nine new compounds to the Toxics Release Inventory. This move aims to improve transparency and provide better data on the presence and release of these persistent chemicals in the environment.