How are Narvalo masks tested?
Narvalo 口罩如何进行测试？
The NARVALO URBAN MASK masks were designed with BLS and tested in the BLS and ITALCERT laboratories, obtaining values ​​higher than a standard FFP3. As described on the certifications page, filtration and respiratory resistance tests and a specific test (called fit-test) were performed to validate the seal on the face (FIT FACTOR >100 for an FFP3).
To date we are the only FFP3 PPE certified mask available for the consumer market according to the EN 149:2001+A1:2009 regulation.
As regards the life of the filter, it has been estimated that each single filter, in optimal storage conditions and in normal use, guarantees protection for 30 days
FFP3 Narvalo Urban Mask 过滤口罩采用BLS设计，并在 BLS 和 ITALCERT 实验室进行测试，获得比标准 FFP3 口罩更高的值。如认证页面所述，进行了过滤和呼吸阻力测试以及特定测试（称为贴合测试），以验证面部的密封性（FFP3 的贴合系数 >100）。
迄今为止，根据 EN 149:2001+A1:2009 法规，我们是唯一可用于消费市场的 FFP3 PPE 认证口罩。