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iqair空气污染面具多长时间？

IQAir 面罩的设计目的是在有限的时间内提供高效的空气污染防护。从本质上讲，过滤器在长期暴露于以下环境后会失去一定程度的效率空气污染.口罩效率下降的速度取决于口罩所暴露的颗粒污染程度、佩戴时长和呼吸频率（例如，在运动时大量呼吸，口罩过滤污染的能力比休息时更强）。

一般来说，当发现口罩变色或呼吸阻力明显增加时，应更换口罩。

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