HEPA filter out 99.97% of airborne contaminants that are larger than 0.3 microns.

The ultra-fine, glass-fiber medium captures microscopic particles that can easily pass through other filters by a combination of diffusion, interception and inertial impaction. To meet the minimum requirements of a HEPA filter, the filter must be tested and certified to prove that it will remove at least 99.97% (9,997 out of 10,000) of particles 0.3-micron in diameter from the air passing through the filter. Particles that size are about 300 times smaller than the diameter of a human hair, and 25 to 50 times smaller than we can see. To a HEPA filter, catching a one-micron particle (1/1,000,000 of a meter) is the equivalent of stopping a cotton ball with a door screen.

 I have used these filters in my lab for over 15 years.  I have full confidence in these filters or I would not be using/selling them.
 
These filters are a necessity for any clean laboratory workspace.
Instructions to build your own Flow Hood CLICK HERE!

NO PO BOXES!  UPS DELIVERY ONLY! 

Ships within 2-3 business days.

HEPA Filters
IN STOCK FOR IMMEDIATE SHIPMENT
Place your order now!
 

HEPA Filter 24" x 12" x 5.8"

$179.95
IN STOCK

HEPA Filter 24" x 18" x 5.8"

$199.95
IN STOCK

HEPA Filter 24" x 24" x 5.8" 

$259.95
IN STOCK

Blowers for Flow Hoods
IN STOCK FOR IMMEDIATE SHIPMENT
 

All-Purpose Blower--549 CFM Free Air Delivery
115V/60Hz, 549 CFM free air delivery, 360 CFM at .8" static pressure. Draws 1.43 amps. A superb, multipurpose fan excellent for use in greenhouses, growing rooms, and for pushing air through small dimension micron filters.   (Good for all HEPA Filters listed above).

$185.00

Because of the attached split capacitor, a better operating efficiency is achieved.