Plasma Air, a Connecticut-based manufacturer and leading innovator in Indoor Air Quality (IAQ) solutions announced that its Needlepoint Bipolar Ionization technology has been UL 2998 validated — certifying the products as ozone-free. As ozone awareness increases in the air purification industry, Underwriters Laboratory – UL has developed a new environmental standard, UL 2998, concerning the ozone output of electrostatic air cleaners. Many HVAC design engineers include this standard in their schedules and specifications to avoid air purification devices that emit ozone.