Does anyone have any experience with or comments on this flasking
hood? http://www.jaroca.com/

There are three models, that retail for $1,072.50 to $1,122.50 each
(plus $88.00 shipping) for the Class 100 (99.97%.) units. The
brochure mentions that they meet or exceed the Federal Standard No.
209A which requires particle count not to exceed a total of 100
particles per CU. Ft. 0.5 microns and larger.

The blower puts out 200 CFM. The literature says, "Provides up to 75
FPM positive pressure to prevent airborne contaminants from entering
cabinet."

Some experts feel 100 FPM is appropriate air flow, not 75 FPM:
http://www.fungifun.com/flowhood/match.htm

Also offered is a filter-blower assembly (no hood) at $588.50 plus $?
shipping.

Replacement HEPA (High Efficiency Particulate Air) filters are $165.00
for the 99.97%, and $258.50 for the ULPA 99.99%, with prefilters
$66.00 per dozen.


It looks easy enough to construct one:

How to construct a hood:
http://www.fungifun.com/flowhood/

HEPA flitter sources:
http://www.hepafilters.com/CFS/filte...rance_sale.htm
http://www.filtersrx.com/sizes.asp?CAT=HEPHP9

Source for blowers:
http://www.grainger.com/Grainger/pro...mId=1611630999
http://www.surpluscenter.com/sort.as...03061222210572

Your thoughts?