The damage to you hood system is likely to be significant over a short period of time as neither hood nor the duct work is designed for acid condensation. Using a laminar flow hood for such a high volume operation also sound like an easy recipe for a significant exposure problem.
My recommendation is:
This is one of those research operations that tends to fly under the radar until the lab starts to fall apart and people start to report in sick.
Pilot plant and laboratory consulting, safety, design,reviews, and training
Richard P Palluzi LLC
72 Summit Drive
Basking Ridge, NJ 07920
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU> On Behalf Of Margaret Rakas
Sent: Friday, March 29, 2019 2:25 PM
Subject: [DCHAS-L] Acid Stills...
We are in the early stages of preparing for a new researcher who plans to distill various mineral acids using a commercially available acid still. This is totally new ground for me/the college--and I am looking for guidance, SOPs, 'What I wish we knew then' stories.
Also we are constructing a soft-sided clean room for said researcher, who will add two positively pressured laminar flow hoods and 1-2 "zero pressure" enclosures. My understanding currently is that the acid still will go in one of the zero-pressure enclosures (which is a higher level of 'clean' than the outer 'clean' room). The soft-sided clean room will be contained within a larger, negatively pressured lab.
If you have any experience with a setup like this, I would love to hear about it whether that's an email to the listserv, or we arrange a phone call or whatever.
Margaret A. Rakas, Ph.D.
Manager, Inventory & Regulatory Affairs
Clark Science Center
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