Tipos de mascarillas respiratorias N95: información básica

El N95 es la serie más popular de mascarillas de respiración de partículas que cumplen con los estándares del gobierno de los Estados Unidos. Las mascarillas faciales son probadas para reducir la exposición a contaminantes en el aire por NIOSH – el Instituto Nacional de Seguridad y Salud Ocupacional. NIOSH tiene nueve clases de aprobación totales, N95, N99, N100, R95, R99, R100, P95, P99, P100 organizadas según la compatibilidad del aceite y la eficiencia del filtro.

La letra significa cómo el filtro prueba en ambientes expuestos a aerosoles de aceite:

N95, N99 y N100. Estos filtros no deben usarse con aerosoles de aceite. Deben utilizarse en entornos expuestos a partículas que no contienen aceite. En muchos casos, los respiradores n-pueden reutilizarse varias veces.

R95, R99 y R100. Estos filtros son resistentes al aceite. Los respiradores r se pueden usar en atmósferas que contengan partículas de cualquier peligro sólido o líquido, incluidos los peligros derivados del aceite. Estas son máscaras de un solo uso.

P95, P99 y P100. Estos filtros son a prueba de aceite. Estos respiradores se pueden utilizar en cualquier entorno expuesto a partículas peligrosas. Los respiradores p están sujetos a limitaciones de tiempo de uso.

El número de eficiencia del filtro se refiere al porcentaje de partículas en el aire que se eliminaron en la prueba: 95%, 99% y 100%. Si una máscara está aprobada por NIOSH, tendrá un sello de clase de aprobación impreso en el respirador.

Las mascarillas aprobadas por NIOSH también vienen en diferentes tamaños, y una mascarilla que se ajuste bien es de vital importancia. Cuando realice una prueba de ajuste de una máscara N95 u otra máscara de respiración de partículas, siga estos sencillos pasos:

1. Presione la mascarilla (respirador) firmemente contra la cara con la pieza nasal exterior en el puente de la nariz.

2. Estire y coloque la diadema superior en la parte posterior de la cabeza por encima de las orejas. Estire la diadema inferior sobre la cabeza y colóquela debajo de las orejas.

3. Con ambas manos, moldee el revólver de metal a la forma de su nariz.

4. Para probar el ajuste, coloque ambas manos sobre el respirador y exhale vigorosamente. Si el aire fluye alrededor de su nariz, apriete la pieza nasal: si el aire fluye alrededor de los bordes del respirador, vuelva a colocar las cintas para la cabeza para que se ajusten mejor y vuelva a probar hasta que no haya fugas de aire.

Antes de elegir la máscara adecuada, también se sugiere que hable con personal de seguridad industrial con experiencia sobre una evaluación de su entorno particular.

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