Founded in 1970, Northern Technologies International Corporation is in the oil analyzer instrument business. The company provides a range of corrosion inhibiting products and offers a variety of corrosion control management services. It serves in more than 50 countries. The company has received an ISO certification from the International Organization for Standardization. The company is also certified to ISO 14001: Environmental Management Standards. It sells environmentally beneficial products and technical services in over 50 countries worldwide either directly and through a network of joint ventures, independent distributors and agents.