AFMS that offer testing of "bag-in, bag-out" (BIBO) HEPA filter housing in accordance with industry standards and manufacturers' requirements.
A "bag-in, bag-out" (BIBO) HEPA filter housing is a type of containment system used in environments where there is a risk of contamination, such as laboratories, cleanrooms, or facilities dealing with hazardous materials. The BIBO system is designed to facilitate the safe removal and replacement of HEPA (High-Efficiency Particulate Air) filters without exposing the surrounding environment to potential contaminants.
Here is an overview of the key tests that are performed by AFMS for bag-in, bag-out HEPA filter housing:
Overview of the key tests
Filter Integrity Testing:
Validation includes testing the integrity of these filters to ensure they effectively remove airborne particles, including bacteria and viruses. This test involves introducing an aerosol of particles (often DOP/PAO) upstream of the filter and measuring the downstream particle penetration.
Pressure Drop Measurement:
For this test pressure drop across the filter is measured to ensure it is within the acceptable range. An increase in pressure drop may indicate a clogged or damaged filter.
Pressure decay test (Upon request):
In this test, the BIBO is properly sealed and pressurized. The pressure sensors or transducers are used to measure pressure data. The initial pressure within the sealed system is recorded and the pressure within the system is monitored over a predetermined test duration.
Particle Counting and Classification:
Certification services perform particle counting using calibrated instruments to measure the concentration and size distribution of airborne particles within the cleanroom. The results are compared against the ISO14644 classification requirements to determine the cleanliness level of the cleanroom.
FILTER INTEGRITY TESTING:
Validation includes testing the integrity of these filters to ensure they effectively remove airborne particles, including bacteria and viruses. This test involves introducing an aerosol of particles (often DOP/PAO) upstream of the filter and measuring the downstream particle penetration.
PRESSURE DROP MEASUREMENT:
For this test pressure drop across the filter is measured to ensure it is within the acceptable range. An increase in pressure drop may indicate a clogged or damaged filter.
PRESSURE DECAY TEST (UPON REQUEST):
In this test, the BIBO is properly sealed and pressurized. The pressure sensors or transducers are used to measure pressure data. The initial pressure within the sealed system is recorded and the pressure within the system is monitored over a predetermined test duration.
AFMS recommends using a bag-in, bag-out HEPA filter housing as it is a critical measure for maintaining containment and a clean and safe environment in facilities where airborne contaminants pose a risk. AFMS offers Consultations in contamination control and assists clients in testing BIBO units to ensure they adhere to relevant industry standards.
