3M LifeASSURE EPF Series Testing

3M Separation and Purification Sciences Division
3M LifeASSURE
™
Filter Cartridge Integrity Testing
Introduction
Integrity testing is the end user's method of confirming the structural integrity of a membrane filter before and after use. It is a
nondestructive testing that has been correlated to membrane retention and validates the performance of the filter cartridge.
The following procedures provide the instructions for integrity testing 3M
3M Technical Service for details on how to integrity test other cartridge configurations.
Background
According to Fick's Law of Diffusion, when a differential gas pressure exists across a wetted membrane, the gas molecules will
"diffuse" through the wetting fluid filling the pores of the membrane. The rate of passage is proportional to the solubility of the gas in
the wetting fluid, the surface tension of the wetting fluid, the differential pressure, the thickness of the membrane, and the surface
area of the membrane.
Product
EPF004
EPF020
• To reduce the risk associated with personal injury due to system failure:
– Depressurize the system prior to installation and prior to removal.
• To reduce the risks associated with chemical exposure which, if not avoided, could result in minor or moderate injury:
– Always use appropriate personal protective equipment (PPE), including eye and face protection, protective gloves during filter
change out and startup.
– Do not use a cartridge that has been damaged or has damaged components.
– Do not modify the cartridge or its components.
• To reduce the risks associated with environmental contamination which, if not avoided, could result in minor or moderate injury:
– At the end of usable life, dispose of cartridge in accordance with applicable local, state, and federal regulations or laws.
EPF Series
™
LifeASSURE
™
Test Pressure PSIG (bar)
35 (2.41)
35 (2.41)
WARNING
CAUTION
EPF Series 10" filter cartridges. Contact
™
Maximum Allowable Diffusion (cc/min)
25
51