A laboratory outside Boston was being shut down. A company was hired to clean everything out that wasn't auctioned off or liquidated. Part of the instillation was a clean room, this giant HEPA filter was in the ceiling, blowing in outside air into the clean room. They were taken out and given to someone who I know that picks up lab equipment here and there. He had a few of them so gave me one. I'm sure the filter is old, and perhaps it's saturated or bad in some way, but if I can throw a motor in, build up a box around it, and it keeps some petri dishes from getting contamination, then I'll use it. It's a very nice metal container and high quality filter, and I don't have enough money to even fund a DIY version right now so that's why I wanted to see if i could salvage this.
On Thu, Jul 17, 2014 at 11:31 AM, CindyB <notcindybnot@gmail.com> wrote:
You got this HEPA filter out of a dumpster? If it wasn't wrapped and sealed and maintained in a structurally rigid fashion it is non-functional as a filter. See this for how a HEPA filter has to be maintained to effectively filter: https://www.wbdg.org/ccb/VA/VADEAL/alert120.pdf
Would this give you what you need? http://www.iheartrobotics.com/2010/02/this-new-lab-diy-cleanroom.html
I could see using better filters (you'll still need to deal with pressure drop and assessment measurements for when to replace filters)
Good luck and thanks for sharing ideas.
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