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Q: Can the mask be washed? 

The mask can be hand washed with Soap and hot water, however this will not extend the life of the filters as the pollution will be locked into them. As the whole mask is the filter, when past its useful life a new mask is needed. Please do not machine wash or dry the mask. 

Q: How long can the mask be used for?

Cambridge Masks™ are non-disposable and can be used up to 340 hours. The length of time they are suitable for depends on how polluted the environment is when you use it. A table is provided below. The mask can be hand washed with Soap and hot water, however this will not extend the life of the filters as the pollution will be locked into them. The mask will need replacing after extended use to ensure proper filtration.

Pollution Level Air Quality Conditions  (AQI) Description Replace After
Good Below 50 Clear visibility to horizon 6 months from opening
Moderate/Unhealthy for Sensitive Groups 51-150 Cannot see pollution with the naked eye, slight haze on horizon 340 hours
Unhealthy/Very Unhealthy 151-300 Haze at 2-3 km visibility 220 hours
Hazardous 301-500 Clouds of pollution, visibility around 1km. 180 hours
Beyond Index Over 500 Visibility below 600 meters. Fog-like clouds of pollution clearly visible even in bright sunlight.

90 hours

Q: How often do I need to change the filter?

Good news! You don’t need to change the filter because the whole mask is the filter. To provide the best seal possible we have sewn the filter directly into the mask. This does not mean the mask will expire faster either, as they are made to last 3-6 months, please check our usage table above to learn about the guidelines.

Q: Is the mask Latex free? 

The classic mask does not contain any latex.

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Q: 清洗指南

由於口罩持續使用達到 340小時,能夠以肥皂手洗做基礎清潔。 但這並不會洗淨過濾到的汙染源或降低防護性能,口罩軍事等級過濾材料的使用, 能夠增添它的防水性能。 

Q: 空氣流通閥是否為過濾用途?

整個口罩表面皆為過濾材質,表面的空氣流通閥是為了降低濕氣產生, 如果在配戴眼鏡時、
居住在溫暖的氣候或是騎乘自行車時配戴口罩,我們建議您 選購有空氣流通閥的款式。

Q:關於退貨詳細辦法

由於口罩為衛生用品,Cambridge Mask 為無菌且經過密封產品,經過開封配戴後, 
恕無法退換。

如是全新未經開封使用後,我們提供 7 天自購買日起全額退費。

Q: 是否能過濾 PM2.5 懸浮粒子?

是的,Cambridge Mask 能夠抵擋 99%空氣中懸浮粒子,我們使用的過濾器能夠 達到 PM0.3 微米,如果這不夠,他同時還能消滅 99.77%細菌及 99.66 病毒。

Cambridge Mask 非一次性使用產品,意味著使用時數能達到數百小時,產品 壽命取決於配戴環境中接觸的汙染源。

請參照下方產品壽命使用表:
一般環境使用下能夠有 3-6 個月方需更換。 請注意口罩是可清洗的材質,但只能夠洗淨表面髒汙,無法清洗到過濾器中的汙 染殘留,所以口罩還是需要定時更換以達到良好的防護效果。