Medical Industries America

Percival Scientific continues to set the standard of excellence for the environmental control industry and occupies more than 60,000 square feet of manufacturing space dedicated to the production of more than 50 different models of plant growth chambers, biological incubators and special application chambers. To ensure each unit is of the highest quality and dependability, all Percival chambers are handcrafted in Perry, Iowa. Innovating pursuits of superior control of temperature, humidity and lighting have kept Percival at the forefront of their industry. The company also produces chamber accessories and offers a variety of optional accessories to meet specific customer needs. Percival Scientific's chambers and incubators have features not offered by any other company and are the preferred choice of universities, colleges, government institutions and private firms in all 50 states and throughout the world. Outside of the university laboratory setting, Percival serves well-known clients, such as Dow AgroSciences, Pioneer Hi-Bred, Monsanto, Novartis, NASA, Eli Lilly, Merck Pharmaceuticals, Revlon, Mary Kay Cosmetics, Shedd Aquarium and Campbell's Soup.

David Breslow founded Linweld in 1945 as the Lincoln Welding Supply Company with the purpose of providing welding supplies and industrial gases to customers in Lincoln, Neb., and the surrounding rural communities. The company has become one of the largest welding supply distributors and independent processors of industrial, medical and specialty gases. The company now has opened store and plant locations in over 20 cities. Today, it has a fleet of transport and delivery vehicles as well as more than 400 employees. In addition to its sales and service locations, Linweld operates its own distribution center, air separation plant, acetylene plant, specialty gas department, and training and automation center. Linweld is also one of the few distributors in the country able to produce oxygen, nitrogen and argon via its own air separation plant. The acetylene plant converts over 40,000 pounds of calcium carbide each week in supplying cylinder acetylene to all Linweld locations and customers. This office is a branch of the corporate office, and it is located in Des Moines, Iowa.