Zahm & Nagel is a family-owned company that produces products for the food and beverage industry. Its equipment is used in breweries and bottling plants in more than 90 countries around the world. Zahm & Nagel s products fall into two categories, testing instruments and carbonating equipment. Its testing instruments are used primarily to test air and C02 content in cans and bottles of carbonated beverages, to test C02 in brewing tanks and to test the purity of C02 gas sources. The company also makes a five or 10-gallon pilot plant for the carbonation, bottling and batch testing of almost any carbonated beverage. The other major product lines sold by Zahm & Nagel are carbonating stones and related carbonating equipment that have been used in the brewing industry for more than 80 years. The company was established in 1908 in Buffalo, N.Y.