to become the Leading Environmental and Laboratory Services provider in Nigeria.


is to execute all projects to highest quality standards within the needs and means of our clients with quality and prompt delivery as our hallmark.

History of TNL

Thermosteel Nigeria Limited (TNL) is a privately owned environmental laboratory and consultancy firm offering a broad range of laboratory analyses monitoring and consultancy services in environmental and related subject areas.

Founded in 1974 under the name Nigeria Thermoplastic Limited (RC No. 3954) and later changed to Thermosteel Nigeria Limited on 21st August 1978. The company has grown to become one of the leading environmental companies in Nigeria.

Between 1976 and 1992, the company specialized in the construction of barges underground / surface tanks for oil or water, silos, fabrication / erection of steel structures and pipelines; dry docking of boats and barges for sand / grit blasting, corrosion detection, repairs and painting; construction of trailer tankers vehicle bodies and seagoing vessels.

By the middle of 1992, the company decided to diversify from its conventional activities to mainly environmental consultancy / analytical laboratory services after carefully studying the trends of the business at home and abroad.

We have a highly skilled and experienced team of professionals [Analytical / Environmental Chemist, Biochemists, Microbiologist, Zoologist and Geologists] and offer a very comprehensive package of specialized services aimed at assisting our clients to meet their environmental, health and safety sustainability and corporate social responsibility objectives.


Environmental Studies
Analytical Laboratory Services
Water, Soil, Oil & Gas Analysis
Environmental Monitoring
Waste Management
Toxicological Testing & Biodegradability

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