Standard

Description

Class of Filter

Nominal PF

Assigned PF*

EN 149

Filtering facepieces for particulates

FFP1
FFP2
FFP3

4
12.5
50

4
10
20

EN 405

Filtering half masks for gases or particulates

FFGASxP1 (*)
FFGASxP2 (*)
FFGASxP3 (*)
(* for particulates)
All, for gases

4
12
50

50

4
10
20

10

EN 140

Half Mask

P1
P2
P3
GAS

4
12.5
50
50

4
10
20
10

EN 136

Full facemask (all classes)

P2
P3
GAS

17
1000
2000

10
40
20

EN 12941

Powered hoods or helmets

TH1
TH2
TH3

10
50
500

10
20
40

EN 12942

Power assisted masks

TM1
TM2
TM3

20
200
2000

10
20
40

prEN 1835

Light duty airline hood or helmet

LDH1
LDH2
LDH3

10
50
200

10
20
40

prEN 12419

Light duty airline, full or half mask

LDH1
LDH2
LDH3

20
200
2000

20
20
100

EN 139

Compressed airline, full or  half mask

(a) C/w half mask
(b) C/w full mask
         i) Constant Flow
         ii) Negative                     pressure
             demand
         iii)  Postitive                      pressure
             demand

50

2000
2000


2000

20

100
40


2000

EN 270

Compressed airline breathing apparatus, c/w hood

200

40

Compressed airline suit

200

EN 138/269

Fresh air hose breathing apparatur, c/w/ cull facemask or hood

40

EN 137

Self contained open circuit breathing

a) Negative pressure demand
b) Positive pressure
demand

2000

2000

40

2000