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Quality, innovation and focus make the best Epsom Salt

Count on Giles to produce quality product that is safe, no matter your application. After all, a company is only as good as its products. And that’s why every raw material we use in our manufacturing process is statistically sampled to ensure it adheres to our stringent requirements for supplier specifications.

We also make sure our employees have timely access to historical data from both the process and the laboratory. This data is used to develop operational set points that ensure our product meets all internal and external specifications.

When customers have special requirements, we store them and make them available to employees to ensure that specific packaging, weight and shipping specifications are followed to the letter every time.

At Giles, innovation also takes many forms. From specialty screening capabilities that deliver specific cuts to our wide variety of package sizes and types, Giles is the most innovative magnesium sulfate producer. Our entire business is magnesium sulfate.

It’s all designed to make us the best at what we do, so you can be the best at what you do.


Magriculture® is specialty agricultural-grade magnesium sulfate heptahydrate (MgSO4). It is exceptionally pure and safe, and carries essential mineral nutrients for plants and animals. And, it’s made right here in the United States.

United States Pharmacopeia (USP) Grade

USP Grade Epsom Salt is used for food, pharmaceutical and retail applications. Also considered an over-the-counter (OTC) drug, USP can be ingested as a laxative. Other uses for USP include yeast production and hops extraction. Yes, the same hops brewed in beer.

Technical Grade

This kind of magnesium sulfate is used in industrial adhesives, swimming pool chemicals, and pulp and paper. Every pound is produced with exceptional quality, innovation, consistency and reliability.

Giles at a Glance:

  • Established: 1950
  • Headquarters: Waynesville, North Carolina
  • Manufacturing facilities: Waynesville, NC, Greendale, IN
  • Products: Magnesium sulfate (crystal and liquid)
  • Market rank: No. 1 manufacturer of magnesium sulfate in North America

Data Sheets

Get technical specifications

Questions? Contact Giles

Call our headquarters or send us an email.