Re: [DIYbio] practical laminar flow benches

On Fri, Jul 18, 2014 at 2:20 PM, John Griessen <john@industromatic.com> wrote:
> On 07/18/2014 02:20 PM, Nathan McCorkle wrote:
>>
>> Actually the goal of laminar flow is that nothing gets IN OR OUT.
>>
>> Laminar flow means a sheet of flowing air, the sheet carries anything
>> floating inside OR outside into a chamber and past a filter.
>
>
> Umm... nothing gets *IN* is all I was discussing Nathan. No biosafety
> cabinet kits imagined.
>
> The calm laminar, (in sheets), flow of air starts after the filter and any
> air diffusing
> evening out slot patterns then flows through the chamber and out a door.
> The door is outflowing enough clean air to continuously evenly push dirty
> outside world air out the door so no dirt gets in that way.
>
> There are types that intend to keep dangerous pathogens inside a box, but I
> am speaking of
> the "keeps dirt out for culturing" purpose here.


I think common lingo just calls what you're describing a clean air
hood, nerdier folks call them positive-pressure hoods.

I could be wrong, but that's been my understanding for the past 5 years or so.

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