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Edit by Guy Kuo

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[title] Virus Filtered Air Source Configurations
[* black] The ''Halo'' can be configured for two types ofis a close-fit PAPR that provides virus-free air.
[* green] '''Oxygen / Compressed breathable air'''
air via small diameter O2 tubing is simplest option. Flow should be 12L/min or higheran anesthesia ventilator virus filter.
[* orangegreen] '''Filtered PAPR''' uses anesthesia viral filter and fan to provide clean air. 12 volt battery pack or AC adapter drives fan.
[* black] Fan does work of drawing air through filter and lessens user fatigue.
[* icon_note] Close fit PAPR requires lower air flow than loose fit PAPR's. This keeps flows within operating range of anesthesia filter.

[* icon_caution] A viral filter should always be used for any external room air sourceon PAPR's intake.
[title] Virus Filtered Air Source Configurations
[* black] The ''Halo'' can be configured for two types ofis a close-fit PAPR that provides virus-free air.
[* green] '''Oxygen / Compressed breathable air'''
air via small diameter O2 tubing is simplest option. Flow should be 12L/min or higheran anesthesia ventilator virus filter.
[* orangegreen] '''Filtered PAPR''' uses anesthesia viral filter and fan to provide clean air. 12 volt battery pack or AC adapter drives fan.
[* black] Fan does work of drawing air through filter and lessens user fatigue.
[* icon_note] Close fit PAPR requires lower air flow than loose fit PAPR's. This keeps flows within operating range of anesthesia filter.

[* icon_caution] A viral filter should always be used for any external room air sourceon PAPR's intake.