Tracer

The engineers added a small amount of tracer to the water to determine the flow rate through the pipes.

The police used a tracer to identify the suspect's fingerprints at the crime scene.

The ecologist added a tracer to the soil to monitor the migration of insects.

The ecologists used a non-toxic tracer to track the migration patterns of bird species.

The chemist added a tracer to the solution to see how the reaction progressed.

The engineer used a tracer to detect leaks in the pipeline.

The airport security officer used a tracer to check for explosives in the luggage.

The forensic scientists used a fluorescent tracer to identify blood stains at the crime scene.

The plant manager used a dye tracer to detect the source of a water leak in the manufacturing process.

The border control officers used a drug tracer to detect illegal substances in packages.

The geologist used a radioactive tracer to study the movement of underground water.

They used a special tracer to locate the source of the leak.

The doctor injected a tracer into the patient's bloodstream to track the spread of the disease.

The quality control team used a tracer to detect defects in the manufacturing process.

The journalist hired a tracer to help her find the source of the leak.

The police used a tracer to track down the location of the suspect.

He placed a tracer over the map to copy the lines.

The government hired a tracer to find and apprehend a fugitive.

He used a tracer to transfer the outline onto the wood.

The detective used a tracer to track the suspect's movements.

The replacement tracer was not compatible with the engine, causing a misfire.

The air traffic controllers use a tracer to monitor the movements of planes.

The artist used a tracer to copy the image onto the paper.

The treasure hunter hired a tracer to find the location of a lost artifact.

The bounty hunter was a skilled tracer who could track down fugitives across state lines.

The tracer was hired to find a missing person who had disappeared without a trace.

The company hired a tracer to investigate the source of a security breach.

The insurance company sent a tracer to investigate the cause of the car accident.

Without a functioning tracer, the engine won't start.