Analysis process

Our analytical services focuses on dye analysis. Our laboratory utilizes a Perkin Elmer LS-50B luminescence spectrometer with synchronous scan capabilities and a detection limit of less than 10 picograms per liter.

We can simultaneously quantify more than five fluorescent dyes in one analytical sweep saving time and expense. We process both water and activated charcoal samples for dye detection and utilize a peak fitting program for all analytical results. Approximately 10 percent of samples are for quality control purposes.

We also utilize optical brighteners as both active tracing agents and to access possible impact from septic waste. Optical brighteners are common additives in laundry detergents.  

Tracer Tests

Tracer tests are generally designed to not be visible at monitoring locations. Our analytical capability extends to seven orders of magnitude below the visual range for most dyes.

Our design work for tracer tests includes the preparation of work plans that detail all aspects of a tracer test, including matrix evaluation for dye selection; selection of injection and monitoring locations; selection of tracing agents; tracer injection methods; duration of monitoring, monitoring methods for both passive detectors, grab samples, automatic water samplers, and in situ monitoring probes;  analysis of water and activated charcoal samples; project quality control and quality assurance; data management and transport protocols; and data reporting.

Environmentally Safe Process

​​Much of our work involves tracing in contaminated environments. We also have performed numerous tracer tests to public water supplies without discoloring or interrupting operations.