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417 Horner Avenue
Alderwood, ON, M8W 4W3

Torvan Medical is a manufacturer of Medical, Pathology, and Laboratory work spaces.

HEPA Filtration


HEPA Efficiency is much more than simply using HEPA grade filters... The HEPA filter needs to be properly sealed to provide HEPA results! Take a look at what Torvan Medical and its partners do for every filter to ensure it performs to HEPA standards.

HEPA Efficiency: Removal of 99.97% of particles at 0.3 microns in size.
So out of 1,000,000 (0.3 micron sized) particles, a true HEPA filter would capture all but 300.

Filtered Air: The particle counter is then arranged so that it is taking in 100% of the outflow air from the HEPA filter. The results show how many 0.3 micron particles escape the HEPA filtration process.

Tested Filtered Air: 100 particles / cubic foot

Tested Efficiency: 99.98%


A MetOne laser particle counter is used. It is calibrated to count 0.3 micron sized particles per cubic foot of air.

Tested Ambient Air: 613,300 particles / cubic foot.  HEPA efficiency in this case, is a filtered result of 184 particles / cubic foot or less.