EN149測試
該歐洲EN149測試認證標準規定了過濾用作呼吸防護設備的半面罩的最低要求，特別是針對顆粒的最低要求，以及評估面罩符合性所需的實驗室和實際性能測試。用于逃生目的的半面罩不屬于本標準的范圍。
This European Standard specifies the minimum requirements for filtering half masks used as respiratory protective devices, specifically against particles, and the required laboratory and practical performance tests to assess masks’ compliance. Half masks used for escape purposes are excluded from the scope of this standard.
在先前的EN149：1991標準下，分類為FFP1S，FFP2S，FFP2SL，FFP3S和FFP3SL。EN149：2001根據半掩膜的過濾能力將其分為三種類型（例如FFP1，FFP2和FFP3）。滿足EN149：2001要求的呼吸器旨在防止固體，水基氣霧劑和油基氣霧劑的侵害。
Under the preceding EN149:1991 standard, the classifications were FFP1S, FFP2S, FFP2SL, FFP3S and FFP3SL. EN149:2001 classified half masks into three types according to their filtering capacities (e.g., FFP1, FFP2, and FFP3). Respirators that meet the requirements of EN149:2001 are designed to protect against solids, water-based aerosols, and oil-based aerosols.
EN149：2001與EN149：1991的不同之處在于，所有根據EN149：2001測試的產品都必須提供針對固體和液體氣溶膠的防護，而EN149：1991僅允許對呼吸器進行針對固體氣溶膠的測試。2010年8月1日，對EN 149.2001標準的修正案生效，涉及口罩防塵過濾器的可重復使用性，用“ R”表示可重復使用，“ NR”表示不可重復使用，并標記為EN 149：2001 + A1： 2009年。
EN149:2001 differs from EN149:1991 in that it is mandatory for all products tested in accordance with EN149:2001 to provide protection against solid and liquid aerosols whereas EN149:1991 allows for the testing of respirators against solid aerosols only. On 1 August 1 2010, an amendment to EN 149.2001 standard entered into force concerning the reusability of masks’ dust filters, indicated by “R”, reusable, and “NR”, non reusable, and tagged as EN 149:2001+A1:2009.

EN-149是口罩的歐洲標準之一，而N95口罩則通過了美國國家職業安全與健康研究所（NIOSH）的認證。兩種類型的口罩均旨在減少佩戴者的呼吸暴露于空氣中的污染物，例如顆粒，氣體或蒸氣。
EN-149 is one of the European Standard for masks while N95 masks are certified by the US National Institute for Occupational Safety and Health (NIOSH). Both types of masks are designed to reduce wearer's respiratory exposure to airborne contaminants such as particles, gases or vapours.

根據分離空氣中顆粒的能力，EN-149口罩分為三類：
The EN-149 masks are classified in three classes depending on the ability to separate air-borne particles:

類      空氣流量為95L / min時的分離能力
FFP1    過濾器分離出80％的空氣傳播顆粒
FFP2    過濾器分離出94％的空氣懸浮顆粒
FFP3    過濾器分離出99％的空氣懸浮顆粒

Class   Separation ability at 95L/min airflow
FFP1    Filter separates 80% of airborne particles
FFP2    Filter separates 94% of airborne particles
FFP3    Filter separates 99% of airborne particles

滿足EN-149標準的FFP2口罩在過濾顆粒方面最接近N95口罩。
FFP2 masks that meet the EN-149 standard are the closest to N95 masks in the ability to filter particles.

EN149測試項目
1.視野
2.流量調節
3.清晰和消毒
4.實際性能
5.吸入二氧化碳含量
6.呼氣閥蓋強度
7.呼吸阻力
8.頭帶
9.連接和連接部件
10.過濾效果
11.皮膚相容性
12.可燃性
13.泄漏量
14.容塵性能
備注：并不是以上所有項目都需要測試，只需要測試產品所涉及的項目。