Sorry. Made some assumptions about knowledge of helium leak testing. Here is the procedure:
http://www.tqc.co.uk/leak-testing/leak-testing-guide-to-helium-leak-testing.php
See the section titled: "Background helium concentration" for techniques to aid in leak detection. There is some skill required in how to apply the helium (or water vapor per this recommendation) to aid in leak checking. This approach to leak checking is not novel.
Regards,
Cindy
On Tuesday, July 29, 2014 9:17:16 AM UTC-7, John Griessen wrote:
-- http://www.tqc.co.uk/leak-testing/leak-testing-guide-to-helium-leak-testing.php
See the section titled: "Background helium concentration" for techniques to aid in leak detection. There is some skill required in how to apply the helium (or water vapor per this recommendation) to aid in leak checking. This approach to leak checking is not novel.
Regards,
Cindy
On Tuesday, July 29, 2014 9:17:16 AM UTC-7, John Griessen wrote:
On 07/29/2014 09:41 AM, Cindy B wrote:
> for profit businesses aimed at the DIYBio and early start-up Bio
Also aiming to lower the sale prices of even the highest quality lab gear by
promoting comparison shopping opportunities to all. I won't be going after any
large systems built into buildings though. I'll influence from the domain of UPS/USPS/Fedex
shippable instrumentation and process equipment.
> I wouldn't put water in/near the HEPA part... just the various edges for debugging after a failed Petri test.
OK. Water vapor would still flow freely through undamaged HEPA filter media, so it's not a positive test of leaks.
It might show some flow patterns -- needs some testing to tell.
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