A sorbent trap is a glass tube filled with specialized sorbent material that captures specific analytes as gas passes through it. After sampling, the traps are returned to the laboratory where they are analyzed to determine the concentration of the gas of interest.

Sorbent traps are widely used for measuring mercury and other trace constituents because they provide reliable results even at very low concentrations and under challenging conditions. These methods are commonly used in process monitoring and regulatory emissions programs. They can simplify testing while maintaining high analytical accuracy, making them a practical and cost-effective option for many applications.

Visit our sorbent trap sampling locations page to see examples of sampling points within a industrial facility.