Technical data
Dräger CPS 7900
33
10.2 Resistance to permeation by chemicals
in accordance with EN 934-2:2002
For European approval the tests against the concentrated
chemicals listed below took place by means of complete
wetting/coverage of the test samples.
The classification for testing the resistance to permeation by
chemicals according to EN 943-1:2002 is as follows:
Due to the tests according to EN 943-2:2002, section 5.2,
certain suit configurations do not qualify for being permanently
exposed to chemicals for which only permeation class 1 or 2 is
reached.
Class 1
>10 minutes
Class 2
>30 minutes
Class 3
>60 minutes
Class 4
>120 minutes
Class 5
>240 minutes
Class 6
>480 minutes
D-mex
Zipper mechanism without
cover
Seams
Test chemicals
in min.
Class
in min.
Class
in min.
Class
Acetone
>540
6
>10
1
>540
6
Acetonitrile
>540
6
>60
2
>540
6
Ammonia
>540
6
>480
6
>540
6
Carbon disulphide
>540
6
>480
6
>120
4
Caustic soda 40 %
>540
6
>480
6
>540
6
Chlorine
>540
6
>480
6
>540
6
Dichloromethane
>540
6
>10
1
>120
4
Diethylamine
>540
6
>480
6
>540
6
Ethyl acetate
>540
6
>60
3
>540
6
Hydrogen chloride
>540
6
>480
6
>540
6
Methanol
>540
6
>480
6
>540
6
n-Heptane
>540
6
>480
6
>540
6
Sulfuric acid 96 %
>240
5
>480
6
>240
5
Tetrahydrofuran
>540
6
>10
1
>540
6
Toluene
>540
6
>120
4
>540
6
