Northern Technologies (NASDAQ:NTIC) reported quarterly earnings of $0.02 per share which missed the analyst consensus estimate of $0.04 by 50 percent. This is a 81.82 percent decrease over earnings of $0.11 per share from the same period last year. The company reported quarterly sales of $21.509 million which beat the analyst consensus estimate of $20.700 million by 3.91 percent. This is a 3.98 percent increase over sales of $20.686 million the same period last year.