NIOS H approved SP3 particulate filter used for 3M™ Powerflow™ systems from 3M for high efficiency respiratory protection against particulates.

Powered Air Purifying Respirators (PAPR) are motorized systems powered by a battery pack which draw air through a filter or cartridge to provide respiratory protection to the wearer. The blower unit can be mounted on the waist, face, or head, depending on the system selected. Potential benefits include:
Certain PAPR systems provide a higher level of respiratory protection than non powered air filtering respirators
Constant flow of air can provide cooling for the worker, resulting in greater comfort for the wearer
Loose fitting headgear options provide respiratory protection without the need for a tight faceseal or fit testing
Battery powered blower pulls the air through the filter resulting in no additional breathing resistance to the wearer