Overview and Proper Use  9
2.3.6 Test Methods   Test method   Without ext. ref. tank   With ext. ref. tank
Press. drop test  All filter systems up to   Not applicable 
  net volume of 150 L
Diffusion test 
  Cartridge systems up to   Cartridge systems up  
  net volume of 14 L   net volume of 150 L
Bubble point test   Small systems and cartridge   Small systems and cartridge  
  systems up to net volume   systems up to net volume 
  of 14 L   of 150 L
Multipoint diffusion   Cartridge systems up to   –
test  net volume of 14 L
Diffusion and   Cartridge systems up to   Cartridge systems up to 
bubble point test   net volume of 14 L   net volume of 150 L
(complete test)
Intrusion test,   Cartridge systems up to   –
water flow test   net volume of 14 L
2.3.7 General Data  Ambient conditions 
Ambient temperature:  +5 up to +35°C
Noise level:   < 70 dB (A) 
Humidity:   95% at 25°C
 
The unit should be set up under ambient conditions that produce no negative 
effects during operation and processing, e.g. from contaminated airflows, 
metallic dust or fluids from leaks, condensation, aerosols or widely changing 
temperature conditions.