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.
Merit Laboratories is proud to have been a participating laboratory in a multi-laboratory validation study to support a new ultra-short chain PFAS drinking water method under development by the U.S. Environmental Protection Agency. This study represents an important step toward standardizing the measurement of ultra-short chain PFAS in drinking water and other aqueous environmental matrices.
Merit Laboratories is proud to announce an expansion of its PFAS accreditation through the Department of Defense Environmental Laboratory Accreditation Program (DoD ELAP), reinforcing our commitment to delivering high-quality, compliant PFAS data for defense and federal projects. Merit Laboratories’ DoD ELAP scope now includes the following compounds analyzed by EPA Method 1633 (LC/MS/MS).
Soil can be a vector for harmful bacteria, plant viruses, fungi, nematodes, and other biological propagules. To safeguard U.S. agriculture and natural resources, the United States Department of Agriculture (USDA) strictly regulates the movement of soil, both from foreign sources and from domestic areas under federal quarantine.
We are excited to congratulate our outstanding clients for being recognized among the Top 200 Environmental Firms of 2025, as ranked by Engineering News-Record (ENR). This well-earned recognition reflects your dedication to innovation, quality, and excellence across the environmental industry.
Incremental Sampling Methodology (ISM
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.
The Michigan Department of Environmental Quality (MDEQ) has released the final Incremental Sampling Methodology and Applications reference guide. The MDEQ guide can be used by environmental professionals as a technical reference for using incremental sampling method (ISM) techniques to evaluate contaminated land while managing risk and future use. ISM is also known as Multi-Incremental Sampling (MIS), Incremental Composite Sampling (ICS), or Incremental Sampling Methodology (IS).
