Making a low cost HEPA air flow box
In this video, I show how I tried and eventually succeeded to build an economical and relatively simple air flow box composed of a small box fan, driving air through a small HEPA filter, mounted to the back of a polypropylene tub or tote. This HEPA air flow box has not yet been tested for leaks (will evaluate over the next 2 weeks) but it should work to pass sterile air through a small work area. This unit was designed for home orchid flasking but may also be useful for any situation where a small sterile work space is needed.
Parts list:
9 inch box fan - plug in type - $17.50
https://www.amazon.com/BLACK-DECKER-M...
I am currently shopping for new HEPA filters - the one that I evaluated in this video did not work out.
~25 gallon, 100 quart, or 100 liter clear plastic tote or box - polypropylene - $15.00
Duct, Duck or Gorilla Tape - $5-10
4 bolts and 8 nuts - $2
TOTAL COST ~ $60.00
If you have suggestions for improvements or modifications, please add a comment.
Thanks,
The Plant Propagator