GOST R 12.4.278-2012 职业安全标准系统. 呼吸保护装置. 设计仅供正压使用的半面罩式独立开路压缩空气呼吸装置. 技术要求. 试验方法. 标记
Occupational safety standards system. Respiratory protective devices. Self-contained open-circuit compressed air breathing apparatus with half mask, designed to be used with positive pressure only. Technical requirements. Test methods. Marking