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 Categories of dust filter

 

The classification of the application category „G" and „C" in correspondents to the dust classes "M" and "H" depends on the MAK-figures of the dust. The following table is elaborated by: TÜV Product Service GmbH/ Dust laboratory

New categories for the dust technical evaluation of industrial vacuum systems, Dedustern, sweep vacuum machines

Before:

ZH 1/487, BG-wood, TRGS 519

suitable for:

Since 1/97:

EN 60335-2-69, IEC 335-2-69

Application Category

Max.

admission rate

 

Dust class

Max.

admission rate

U

5%

-dust with MAK-figures > 1 mg/m³

L

1%

S

1%

-dust with MAK-figures > 0,1 mg/m³

M

0,1%

G

0,5%

-dust with MAK-figures > 0,1 mg/m³

C

0,1%

dust with MAK-figures > 0,1 mg/m³ and carcinogenic substances acc. § 35 GefStoffV

G

0,5%

-dust with MAK-figures <= 0,1 mg/m³

H

0,005%

C

0,1%

-dust with MAK-figures <= 0,1 mg/m³ and carcinogenic substances acc. § 35 GefStoffV

K1

0,05%

- carcinogenic dusts (§35 Gef Stoff V) incl. particularly dangerous carcinogenic substances acc. §15a GefStoffV

K2

0,05%

-dusts, who are contaminated with pathogenic

Additional requirements

0,05%

Asbestos

Additional requirements in Germany

Look H

B1

Germany

Look to corresponding category

(S,G,C or K)

Explosive dusts, explosion class St1,St2, and St3 in Zone 11St1, St2, and St3 in Zone 11

B1

(Germany)

Look at corresponding dust class(M or H)

H2

Germany

0,2 mg (wood) per m³ (air)

Wood dust (*)

M

0,1%

(*) in Germany over 1200W and/or 50 litre of the dust collecting vessel category B1 is required

The MAK-figure is the maximum concentration of a toxic substance in the air at the working place.

Integrated separation rate* for MPPS**EN 1822
> 85%H 10
> 95%H 11
> 99,5%H 12
> 99,95%H 13
> 99,995%H 14
> 99,9995%U 15
> 99,99995%U 16
> 99,999995%U 17

Classification for HEPA and ULPA

 

* The integral rate of separation is the average value of all over the surface of the filter measured separation rates.

** The size of the particle is called MPPS (Most Penetrating Particle Size), when the medium shows the lowest separation rate.