Fqs LLC
At a glance
EmployeesNot reported
In business sinceNot reported
HeadquartersGlen Ellyn, IL
SAM.gov UEIKMWGRFZJL572
FQS manufactures fuel system biocides, stability additives, microbial test kits, and fuel sampling equipment, and provides fuel analysis and filtration services. The company has developed mobile filtration units, additive injection units, and chemical technology for fuel quality management. FQS serves the marine, rail, aviation, military, oil and gas, on-highway, off-highway, biomass fuel, and fuel distribution industries.
Summarized from the company’s own website
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Fqs LLC | Glen Ellyn | IL | — | LIKELY ACTIVE |
Compiled from federal records — EPA, OSHA, SAM.gov and the U.S. Census — and from the company’s own website. Federal source data is public domain. Each plant’s page names the source of every field.


