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Previous by Date: Subject: Re: [DCHAS-L] Ventilation Requirements for Acid Cabinets Date: Thursday, April 21, 2022 at 12:48:44 PM Author: davivid <davivid**At_Symbol_Here**WELL.COM> |
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Agreed. I find that inventory control, cap replacement, and parafilming caps closed does more to help than any form of secondary containment. Ammonium hydroxide and trifluoroacetic acid seem to be our fastest cap destroyers (< 6 months).
Regards,
Tammy Rechtin
-----Original Message----- >I think the issue may be more the materials of construction or your handling practices. The point is that inventory control and culling is likely to be a cheaper approach to managing chemical libraries than ventilating storage cabinets in accordance with applicable building codes. It's important to remember, though, that a useful library requires a librarian managing the collection. Fortunately, there are many different software platforms of different scales and levels of detail available to support this oversight of the chemical library. - Ralph Ralph Stuart, CIH, CCHO --- ---
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From: ACS Division of Chemical Health and Safety
Sent: Thursday, April 21, 2022 5:56 AM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: Re: [DCHAS-L] Ventilation Requirements for Acid Cabinets
>
The problem I have consistently seen when chemical storage cabinets start to decay is long term (i.e. decades) of storage of volatile chemicals in the cabinets. I once asked a Sigma/Aldrich representative how long they expected a chemical cap to contain volatile contents in their containers. Their response was 'about a year'. In my experience, academic chemists are routinely skeptical that their reagents have a limited shelf life, but they also tend to buy new chemicals for their research rather than use legacy materials of unknown age and quality.
ralph**At_Symbol_Here**rstuartcih.org
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