PFAS
Merit Laboratories, Inc.
PFAS Sampling Tips: Best Practices for ...

Accurate laboratory results begin long before samples arrive at the laboratory. Proper field sampling techniques are essential for minimizing the potential for cross-contamination and ensuring data quality. Because PFAS compounds are found in many everyday consumer products, extra care should be taken during sample collection.

PFAS Sampling Tips: Best Practices for Collecting High-Quality Samples
DoD, Incremental Sampling ISM
Merit Laboratories, Inc.
Merit Laboratories Expands DoD ELAP ...

Advancing its commitment to supporting a comprehensive federal services program, Merit Laboratories has expanded its DoD ELAP accreditation to include Incremental Sampling Methodology (ISM) sample preparation.

Merit Laboratories Expands DoD ELAP Accreditation to Include ISM Sample Prep
Air Testing, PFAS
Merit Laboratories, Inc.
Merit Laboratories Showcases Emerging PFAS Air ...

Merit Laboratories is pleased to announce its participation in the 2026 International Conference on Remediation of Chlorinated and Recalcitrant Compounds (Battelle Chlorinated Conference), taking place May 31 – June 4, 2026, in Fort Worth, Texas. Recognized globally as one of the leading conferences for environmental remediation professionals, the event brings together scientists, engineers, consultants, regulators, and industry leaders to advance solutions for complex environmental challenges.

Merit Laboratories Showcases Emerging PFAS Air Testing Capabilities at 2026 Chlorinated Conference
ISM, Incremental Sampling ISM, Merit Laboratories
Merit Laboratories, Inc.
Diverse Range of Analytical Soil Testing Using ...

Incremental Sampling Methodology (ISM) is an increasingly accepted approach for characterizing soil contamination and reducing the uncertainty commonly associated with traditional discrete sampling methods. By collecting and combining multiple increments from a defined area, ISM is designed to provide a more representative estimate of mean contaminant concentrations within a designated decision unit.

Diverse Range of Analytical Soil Testing Using Incremental Sampling Methodology (ISM)
ISM
Merit Laboratories, Inc.
Understanding Incremental Sampling Methodology ...

Incremental Sampling Methodology (ISM) is increasingly used across the environmental industry to evaluate soil contaminants. Unlike traditional discrete sampling, ISM collects numerous soil increments that are combined, processed, and subsampled to produce more representative measurements of contaminant concentrations within a defined area.

Understanding Incremental Sampling Methodology (ISM) for Soil Contaminant Evaluation

PFAS Sample Collection Containers and Tips

PFAS Sample Collection Containers and Tips

Sample collection for PFAS (polyfluoroalkyl substances) requires an experienced environmental professional to eliminate and reduce potential field issues that could impact analytical test results.  To support our clients’ PFAS sample collection efforts, Merit provides sample collection kits to ensure the proper sample volume is collected, along with appropriate preservatives and sample containers. 

It must be noted that the sample collection container type, volume, and preservatives are dependent upon the sample matrix and analytical method. Here are the standard guidelines for the PFAS sample collection kits provided by Merit:

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It’s Hard to Know the PFAS Players Without a Scorecard

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It’s Hard to Know the PFAS Players Without a Scorecard

Many of the longer chain carbon compounds analyzed as part of PFAS testing have long chemical names and can be tricky to differentiate. At Merit Laboratories, we’re always working to find ways to make it easy for our clients.  To help you out, here’s a list of acronyms used for commonly-analyzed polyfluoroalkyl substances (PFAS). 

MDEQ Launches Program for PFAS Testing at Michigan Schools and Public Water Systems

MDEQ Launches Program for PFAS Testing at Michigan Schools and Public Water Systems

The Michigan Department of Environmental Quality (MDEQ) has launched a statewide program for Michigan schools and public drinking water systems to test for polyfluoroalkyl substances (PFAS).  Schools with water from wells have been notified by the MDEQ of the need for PFAS testing.  Schools receiving water from a public water system will be notified of analytical results by the drinking water provider.

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The Number of PFAS Sites in Michigan Grows

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The Number of PFAS Sites in Michigan Grows

The number of sites with PFAS contamination in Michigan continues to grow.  The MDEQ has compiled a listing of these PFAS sites along with a map  that have been identified as having PFAS levels that are potentially impacting human health and the environment .  The sites, which are found at locations throughout Michigan, include:

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Merit Laboratories Delivers PFAS Technical Presentation for the Michigan Manufacturers Association

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Merit Laboratories Delivers PFAS Technical Presentation for the Michigan Manufacturers Association

Maya Murshak, CEO of Merit Laboratories, delivered a technical presentation to the Michigan Manufacturing Association about Perfluorocarbons (PFCs). PFCs are commonly known as Per- and Polyfluoroalkyl Substances (PFAS).  The presentation was held on May 8th in Lansing for members of the MMA Environmental Policy Committee and PFAS Workgroup.

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MDEQ Releases Minimum PFAS Analyte List for Industrial Pretreatment Program (IPP) Initiative. Spoiler Alert: Merit Labs analyzes for all of them.

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MDEQ Releases Minimum PFAS Analyte List for Industrial Pretreatment Program (IPP) Initiative. Spoiler Alert: Merit Labs analyzes for all of them.

The MDEQ recently released the list of PFAS compounds that should be analyzed as part of the Industrial Pretreatment Program.  The list, considered a minimum list of PFAS compounds, was created by the MDEQ based upon the potential for these analytes to be present in Michigan, the availability of the chemical standards for laboratory testing, and ability of laboratories to perform the testing.

Merit Laboratories performs testing for all of the PFAS compounds listed in the MDEQ IPP PFAS directive.  The list of IPP PFAS compounds includes:

Go with the Flow (Rate) and Select the 1.4-Liter Canister

Go with the Flow (Rate) and Select the 1.4-Liter Canister

Our team of scientists recently completed the analytical study for air samples to compare analytical results between 6-Liter and 1.4-Liter Silonite™ Ceramic Coated canisters. The study was performed by collecting the same samples in both 6-Liter and 1.4-Liter canisters. A total of seven split samples were collected and analyzed.  Analytical data from the comparison study were in agreement; with an average relative percent difference (RPD) of only 4.6% for each of the 81 compounds analyzed by TO-15.  The results of the study confirm that it is not the size of the air sample collected that counts, but sample collection flow rate that actually matters.

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Merit Laboratories is Michigan’s PFAS Laboratory

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Merit Laboratories is Michigan’s PFAS Laboratory

Merit Laboratories is Michigan’s environmental laboratory for PFAS analytical testing.  Merit offers two analytical options for PFAS: EPA 537 and ASTM D7979. Merit Laboratories performs EPA 537 in drinking water for the list of 14 PFAS substances that are EPA-approved by the method. EPA 537 is a prescriptive Drinking Water Method for 14 PFCs.  We also perform ASTM D7979, which is a method for non-drinking water matrices. Merit Laboratories can analyze for the MDEQ PFAS requested list of 24 PFAS substances using ASTM D7979.

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DoD ELAP WBE and SBE Laboratory Services

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DoD ELAP WBE and SBE Laboratory Services

Did you know that Merit Laboratories is designated as a Small Business Enterprise (SBE) and Woman-Owned Small Business (WBE/WOSB)?  

As part of our SBE and WBE status, we help prime contractors supporting federal and state projects meet subcontracting goals and obligations. In FY2018, the Department of Defense has established a small business subcontracting goal of 33% for prime contractors supporting the DoD. Merit can help you meet these goals and provide you with outstanding analytical data quality and service.