About Us

A.R. Ledoux, Ledoux & Company founder
A.R. Ledoux

In 1880, A.R. Ledoux founded Ledoux & Company with one goal in mind – provide his customers with accurate, unbiased assay results.  For more than 136-years, precision and accuracy has been the cornerstone to Ledoux and Company’s success.

We are an independent commercial metallurgical chemical laboratory that operates under the mission statement of providing our worldwide clients with timely, accurate and dependable test results.

Our full-service laboratory has five areas of expertise – fire assay, wet chemistry, instrumental analysis (ICP),  nuclear services, and weighing and sampling.  All of these laboratory practices follow strict guidelines to ensure quality assurance for all of our work.  Our laboratory methods and procedures follow the precise quality control of ISO 9001:2008 certification and ISO 17025 accreditation.

We provide analytical services and assays for precious metals and base metals in all type of materials.   Our testing results are accurate, precise and reliable.  Our assays are commercial grade and can be used for umpire and control purposes.  Our worldwide customers include catalyst manufacturers, users, producers and recyclers.  We have been family-owned and operated since 1880, and accuracy is our only goal.

We have a well qualified staff and state of the art equipment for assaying precious metals and base metals to the accuracy expected by the commercial trade.  Additionally, we have an extremely talented staff to take care of your sampling and representation needs across the United States.

During our 136-year history, we have analyzed some interesting materials like;

  • copper used on the Statue of Liberty’s torch
  • metals used for the top of the Chrysler building in New York City
  • metals that were used in the cables of the Brooklyn Bridge
  • moon rocks and metal from the lunar vehicle from the 1969 lunar landing
  • volcanic dust from the Mount St. Helens’ eruption
  • monitored Hudson River water when the first nuclear submarine docked during the Manhattan Project
  • authenticated coins from the “Atocha,” a 1622 Spanish galleon found sunken off the Florida coast
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