Passive Samplers

SiREM provides passive samplers and comprehensive interpretation services for passive samplers in porewater, surface water, and stormwater. Because passive samplers only quantify contaminants in their dissolved form, they provide data that are a true representation of the bioavailability of contaminants. 

Experience the SiREM Difference – Comprehensive Passive Sampling Services

SiREM’s passive sampling services are offered as an end-to-end serviceSiREM provides the samplers, optional support for diverless deployment, analytical chemistry (in partnership with Eurofins Environment Testing), and reporting of the final data to deliver the equilibrium concentration of target analytes. In addition, solutions are configurable and customizable for projects while using standard USEPA SW-846 methods and protocols. Overall, our samplers are easy to use, field evaluated, and adaptable to meet projectspecific goals. 

Passive Samplers for a Range of Contaminants 

 SiREM Passive Sampler Compounds of Interest

Hydrophobic Organic Compounds 

Polychlorinated biphenyls (PCBs) Polycyclic aromatic hydrocarbons (PAHs) Organochlorine pesticides (OCPs) 

Dioxins and furans 

Dissolved Inorganics and Organic Carbon 



Organic carbon 

Water quality parameters (alkalinity, acidity, pH, hardness, chemical oxygen demand, Redox potential/ORP, salinity, and specific conductance)

Per- and Polyfluoroalkyl Substances (PFAS)

Sampler configurations can be customized for simple to more complex sampling plans for both porewater and surface water deployments 

A Cost-Effective Solution

  • Passive sampling provides a better understanding of environmental risks and mobility of compounds—potentially saving millions of dollars per site in unnecessary investigation, remediation, and management costs.

  • Service costs are comparable to traditional chemical measurements and provide superior data value to better inform site investigation and decision-making.

  • Unique diverless deployment and retrieval options reduce cost and speed up field deployments.

A Decision-Making Tool

  • Decision makers use passive sampling to provide critical data for the following:

      • Fate and risk assessment
      • Toxicity identification
      • Remediation design and monitoring
      • Enhanced storm water and effluent monitoring
  • Results are provided on a dissolved-phase basis (nanograms per liter) for porewater in a reporting format that can be easily interpreted by data users and decision makers.

  • Passive sampling is accepted by USEPA and state regulatory agencies.

  • SiREM is listed as a service provider in USEPA passive sampling guidance.

Passive sampler deployments have ranged from as few as 2 samplers to more than 100 samplers for a single project. No matter the scale, SiREM provides unprecedented support for site characterization and remedial monitoring, with deployments at over 100 sites across the United States, Canada, New Zealand, the United Kingdom, Italy, and Serbia.

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