Started in 1996, Field Environmental Instruments (FEI) is an employee-owned and operated business headquartered in Pittsburgh, Pennsylvania.  FEI offers an extensive inventory of environmental instrumentation and monitoring equipment, supplies and unmatched service to help its customers. The company’s operating partners have a combined 50+ years of environmental and customer service experience and understand first-hand what it takes to help their customers be successful.

With its nearly 80 employees and 11 full-service branches throughout the United States, FEI has expanded its headquarters location to over 35,000 square feet to accommodate its customer service, technical support, equipment repair, fulfillment, and shipping and receiving departments. The industry has responded to the company’s dedication to its customer service and support, making it the vendor of choice for many reasons.

  • 11 full-service branches strategically located throughout the United States to rapidly respond to customers' equipment and instrumentation needs
  • A vast inventory of the latest monitoring instrumentation, environmental equipment and supplies
  • Factory trained and experienced equipment service technicians
  • Complete documentation and calibrations
  • 24/7 technical support
  • 1910.120 trained field technicians
  • Company specific, cost-effective, time-saving and highly reliable ordering and billing systems
  • Fully integrated shipping/tracking systems and easy return processes
  • FEI’s fleet of delivery vehicles offer free local delivery and pickup from all offices
  • Delivery and shipping staff are Department of Transportation (DOT) and International Air Transportation Association (IATA) trained, and are certified to ship dangerous goods and hazardous materials


FEI continues to set the industry standard and proudly supports a customer base including a majority of firms that are in the environmental consulting and engineering market.