Wheaton makes and markets a variety of laboratory instruments, specialty glass apparatus, and liquid handling equipment. Its products include bottles, vials, closures, chromatography equipment, environmental and sampling equipment, and life science products. Wheaton distributes its wares through its own catalog as well as through more traditional global laboratory supply companies. Customers include pharmaceutical firms, research labs, and universities. The company is a subsidiary of Wheaton Industries, which is owned by private equity firm River Associates Investments.