HEPA vs 3M Technology
HEPA air purifiers use pleated High Efficiency Particle Arresting (HEPA) filters to trap allergens, along with a fan to pull air through the filter. The key advantage of the HEPA filter is the high efficiency in collecting dust and particles in the air. Consequently many air purifiers are promoted as having a HEPA filter, but the use of HEPA filters does not guarantee efficiency. With the introduction of the 3M filter technology in the Zalmandn Air Filter range, the efficiency of the filter by 3M Technologies absolutely competitive with the high quality end of the HEPA filter products – just check the CADR to confirm.
The key advantages of the 3M filter technology are:
- Environmentally friendly
- Higher efficiency for dust collection
- Higher ventilation power – less air flow resistance
- Compatible to produce a multi-media filter for a wider range of contaminant removal
Test Results for Collection Efficiency of 3M Electrostatic Collection Filter
| Test Conditions | Chamber size: 4.116m3Length of time: 2 minutes
Motor: RPM 1330 |
| Number of particles | Before: 2,767,599ea / cm3After: 27,119ea / cm3 |
| 0.3 Micron : | 99.02% |
| 0.5 Micron | 99.80% |
| 0.7 Micron | 99.80% |
| 1.0 Micron | 99.80% |
| 2.0 Micron | 100.00% |
| 5.0 Micron | 100.00% |
Click Here for an explanation of Sick Building Syndrome
Reference
UNITED STATES. Environmental Protection Agency. Introduction to Indoor Air Quality. EPA/400/3-91/002. July 1991.
Ó ASEHA Qld Inc. PO Box 45 Woody Point Qld 4019









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