给出了两种服装的特点:通风加压服装和不通风非加压服装。这些特征包括制造材料、设计和尺寸、附件、呼吸空气供应和内部通风。附录A描述了一种测试方法，根据该方法，任何新型服装都可以指定一个保护系数，以便于用户做出选择。附录B和C给出了测量通风加压服装的密封性和供气流量的方法。附录F给出了选择防护服的建议，以供参考。

Gives the characterisitcs of two types of clothing: ventilated-pressurized garments and unventilated-unpressurized garments. These characteristics include the manufacture materials, design and size, accessories, breathing air supply and internal ventilation. Annex A describes a test method according to which any new type of garment can be assigned a protection factor that makes it easier for the user to make a choice. Annexes B and C give methods for measuring leak tightness and air supply flow rates of ventilated-pressurized garments. Annex F gives, for guidance, recommendations for choosing protective clothing.