SCBA specification include the type of cylinder, the pressure, the mask, and the harness.

 SCBA specification include the type of cylinder, the pressure, the mask, and the harness. SCBA must be approved by the National Institute for Occupational Safety and Health (NIOSH). 

Cylinder

The cylinder may be made of aluminum lined, carbon composite material 

The cylinder may have a minimum water capacity and free air capacity 

The cylinder may have an adjustable outlet pressure 

Mask

The mask may be a mouthpiece, half mask, or full-face mask 

The mask may be made of scratch proof materials that don't cause dermatitis 

The mask may be designed to fit various sizes 

Harness 

The harness may be made of extra heavy duty and non-flammable aramid fibers

The harness may have insulating tunnels on the shoulder pads to protect the air line from heat and fire

Other specifications

The SCBA may have an RFID chip for asset and maintenance tracking 

The SCBA may have an audible warning alarm 

The SCBA may have an integrated indication of air pressure, ambient temperature, and remaining time 

The SCBA may be water proof 

The SCBA may come with an operation manual in English 

SCBA is used in emergencies when there is an oxygen deficiency, a hazardous chemical, or when it's deemed necessary by emergency response personnel.