Ledoux & Co. is an independent, commercial metallurgical laboratory. Our full-service portfolio allows us to analyze all precious metals, base metals, concentrates, minerals, ores, and trace impurities. We are ISO 17025 accredited and ISO 9001:2015 certified, both ensure precise testing and quality assurance. Our assays are precise, unbiased and commercial grade. We report on exactly what we analyze. We do not waiver from the scientific results. Additionally, we offer on-site witnessing and sampling representation at all US refineries, smelters and processing facilities. Our employees monitor our customers’ materials throughout the entire process. Our representatives are the “eyes and ears” of our customers and treat their valuable materials like their own. Our expertise, reputation, and assays are the cornerstones of our success. We have been in business for more than 142-years, providing the industry standard for accuracy and dependability.