Leco Corporation

Leco Corporation is a global manufacturer of analytical laboratory instruments based at 3000 Lakeview Avenue in St. Joseph, Michigan. Operating from the 49085 postal area, the family-owned organization has served analytical and scientific laboratories since 1936 by developing specialized tools for elemental, thermal, mass spectrometry, and metallography testing. The company's core analysis equipment covers carbon, sulfur, nitrogen, hydrogen, oxygen, moisture, ash, volatile content, loss on ignition, calorimetry, optical emission spectrometry, and GC or GC-MS systems. Leco Corporation designs instrumentation tailored for complex testing across energy and fuels, battery materials, petrochemicals, environmental soil analysis, food science, flavor and aroma testing, metabolomics, and construction materials like metals, minerals, and ores. By focusing on deep application knowledge and precise measurement, the company provides rigorous analytical equipment capable of evaluating critical elements down to parts per million.

By manufacturing and assembling over ninety percent of its instruments in-house—including key components—Leco Corporation maintains vertical quality control from raw materials to final production. To ensure long-term equipment performance, the company provides complete instrument and application support, remote diagnostics via SmartLine, preventive maintenance plans, and hands-on operator training. Clients can request direct service, obtain custom application guidance, and source specialized consumables for ongoing testing needs. Service delivery is supported globally and locally through direct phone consultations, email communications, and scheduled on-site field support visits. Leco Corporation serves diverse laboratory environments across energy, agricultural, and industrial material sectors, offering flexible maintenance structures and dedicated technical resources designed to keep laboratory workflows running at peak efficiency and maintaining accurate, trustworthy testing results.