Innotech Products Ltd., of Cincinnati, is known to scores of soldiers and survivalists as the Heater Meals company, but recently has begun offering a self-heating beverage kit. Heat for the drinks and meals is produced when the user mixes salted water with a patented packet of powdered iron and magnesium. The simple exothermic reaction raises the existing temperature of the products around it by 100 degrees within about 10 minutes. Innotech/HeaterMeals was founded in 1990. The largest group of customers are military/government agencies; the earliest and longest-running fans of Heater Meals are truckers. Other buyers: hospitals, and social service agencies that aid homeless and elderly people. The company employs 50 in Hamilton County.