Andrew S. McCreath & Son, Inc. is accredited, ISO 17025 by the American Association of Laboratory Accreditation ( A2LA) as a commercial chemical laboratory. Our primary business is the sampling and analysis of ores, ferro alloys and minerals.  

The laboratory is located in Harrisburg, PA, while sampling/inspection personnel are located along the Gulf of Mexico, the East Coast, and Great Lakes of the United States.  We also sample/inspect  in Canada, Mexico, the Baltics, and where ever else our services are needed. Our samplers in the US have portable crushing and preparation equipment allowing us to sample materials at any location.  McCreath samples and analyzes more ferro alloys in the USA than any other commercial laboratory.