Page 11 - venus new 1

F
it F
Fit Factoractor
Nominal Protection Factor ( NPF)
Nominal Protection Factor ( NPF) Clause 8.4.3 - IS 9623:2008Clause 8.4.3 - IS 9623:2008

Nominal Nominal
DeviceDevice MarkingMarking Protection rotection
P
F
Factoractor
FFP1 FFP1 4 4
a) Filtering F
a) Filtering Facepiece Respirators (FFR)acepiece Respirators (FFR) FFP2 FFP2 12 12
FFP3 FFP3 50 50
FFP1 FFP1 4 4

b) Filter with quarter mask or half mask (HFM & RF)b) Filter with quarter mask or half mask (HFM & RF) FFP2 FFP2 12 12
FFP3 FFP3 50 50

FFP1 FFP1 5 5
c) Filter with full face mask (FFM & RF)c) Filter with full face mask (FFM & RF) FFP2 FFP2 20 20
FFP3 FFP3 1000 1000
Gas Filtering Devicesiltering Devices
Gas F
a) Filter with quarter or half mask (HFM & RF)a) Filter with quarter or half mask (HFM & RF) 20 20
b) Filter with full face mask (FFM & RF) b) Filter with full face mask (FFM & RF) 2000 2000
Fresh Air Hose Breathing Apparatusresh Air Hose Breathing Apparatus
F
a) With half maskith half mask 50 50
a) W
b) With hood (only PAPR)ith hood (only PAPR) 1000 1000
b) W
c ) With full face mask With full face mask 2000 2000
c )
d) With mouthpiece assemblyith mouthpiece assembly 1000 1000
d) W
Compressed Airline Breathing ApparatusCompressed Airline Breathing Apparatus
a) W
a) With half maskith half mask 20 20
b) With hood (Constant flow type)ith hood (Constant flow type) 1000 1000
b) W
c) W
c) With full face mask (Constant flow type)ith full face mask (Constant flow type) 2000 2000
d) With mouthpiece assemblyith mouthpiece assembly 1000010000
d) W
Self-contained Open Circuit Component Air Breathing ApparatusSelf-contained Open Circuit Component Air Breathing Apparatus
a) W
a) With full face maskith full face mask 2000 2000
b) W
b) With mouthpiece assemblyith mouthpiece assembly 1000010000
c) W
c) With positive pressureith positive pressure 5000050000
Self-Contained Closed Circuit Oxygen Breathing ApparatusSelf-Contained Closed Circuit Oxygen Breathing Apparatus

a) With full face mask**ith full face mask** 2000 2000
a) W
b) With mouthpiece assembly**ith mouthpiece assembly** 1000010000
b) W
c) With positive pressure**ith positive pressure** 5000050000
c) W
The re-circulation of the gas can reduce the protection factor.The re-circulation of the gas can reduce the protection factor.

The nominal protection factors are given only for guidance. The nominal protection factors are given only for guidance.
**In closed circuit breathing apparatus, the exhaled breath is re-circulated to remove carbon dioxide. Any other contaminant present is also re-circulated and may esent is also re-circulated and may
**In closed circuit breathing apparatus, the exhaled breath is re-circulated to remove carbon dioxide. Any other contaminant pr
reduce the effective protection given by the device. reduce the effective protection given by the device.

11 11