FILTER 92590-A1B1E1K1 - Type A1B1E1K1 - EN 14387 - Combined A1+B1+E1+K1 - For masks: > A1: Organic gases and vapors boiling + 65 º C. >B1: Inorganic gases and vapors. >E1: Sulfur dioxide and other acid gases and vapors. >K1: Ammonia and organic ammonia derivatives. -Valid for: > 15040016: RESPIRATORY MASK WITHOUT FILTER. WITH VALVE.MAURER 9200