This filter respirator is designed for applications involving dust, mists and fibers. This respirator meets the requirements of EN149:2001 + A1:2009 and should be used to protect the wearer from solid, oil and water based aerosols. The respirator can be used in concentrations of contaminants up to 4 times the Occupational Exposure Limits (OEL). The exhalation valve reduces breathing resistance and provides greater comfort in hot and humid work conditions.