Specializing In A Specialty Product
Sulfate of Potash is GSL's business. As North America's largest specialty potash producer, we're equipped to meet specific potassium needs in several specific markets:

Setting Quality and Performance Standards
From vast fields to rolling orchards and vineyards to public and private golf courses, GSL Sulfate of Potash is seen as the prime source of potassium and sulfur. GSL's guaranteed 50% K20 content combines with 17% sulfur in its most effective sulfate form. GSL guarantees less than 0.8% chlorides, the lowest salt index of any major potassium source. What's more, every step in the extraction and production process of our SOP is designed to meet the highest standards of quality and environmental safety.

GSL's SOP — The Natural Choice
With all the benefits of this low-chloride potassium source, SOP from GSL is the natural choice for growers, turfgrass managers and industry manufacturers alike.

Only GSL has the product for every application imaginable, and offers the TurfBlend® line developed especially for the turf and ornamental market. Only GSL offers all of this, along with the expertise of a company that remains focused on one goal — meeting the specialty potassium needs of its customers.