GOST R 12.4.268-2012 Occupational safety standards system. Respiratory protective devices. Method of definition of the maintenance the carbon dioxide and oxygen in the inhaled mix
GOST R 12.4.220-2012 Occupational safety standards system. Respiratory protective devices. Self-contained closed-circuit breathing apparatus for escape. Technical requirements. Test methods. Marking. Sampling rules
GOST R 12.4.268-2012 history
2012GOST R 12.4.268-2012 Occupational safety standards system. Respiratory protective devices. Method of definition of the maintenance the carbon dioxide and oxygen in the inhaled mix