From: "Jeffrey Your, CSMM" <00000506835eb4f7-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU>
Subject: Re: [DCHAS-L] Acid and Base (glass wash) Bath Containers
Date: Mon, 2 Dec 2019 15:46:59 -0500
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Message-ID: CAK5rM0TbvsvpEsNkP9YpRqdQp+-aKcyXB3Dx7C1CGWS6bCPmwg**At_Symbol_Here**mail.gmail.com
In-Reply-To <7BCF15BB-79F6-4678-A1D0-614BA479BDED**At_Symbol_Here**upenn.edu>


Kimi,
I use a five gallon pail with a screw top for our KOH IPA base bath. Pressurization has not been a problem over the years.

On Mon, Dec 2, 2019 at 2:52 PM Brown, Kimberly Jean <kimibush**At_Symbol_Here**ehrs.upenn.edu> wrote:

Hello, and Happy December!

Have any of you issued (or been subject to) specific guidance regarding lab-scale acid and bath baths for glassware cleaning?

After some recent spills, we evaluated the types of containers being used for acid and base baths in our labs. Some groups are using 5-gallon buckets with poorly fitting lids, which is what led to the spills. In updating our recommendations, however, we questioned whether or not the lids should be tight-fitting (liquid/gas tight) due to the potential for pressurization.

Ultimately, we recommended a product such as this: https://www.calpaclab.com/nalgene-rectangular-tank-with-cover-pp-7-gal-12x12x12/ng-14200-0010# (Which more than a few groups resisted/rejected for a variety of reasons).

A researcher argued that there is no potential for pressurization of a base bath (e.g. KOH and IPA) during glassware soaking, and therefore, a bucket with a screw top lid should still be an acceptable option.

Thoughts? Is there a potential for pressurization of the base bath? What requirements, if any, do you have for this?

Thanks for sharing your experiences and opinions!

Kimi Brown

(Kimi Bush) (she, her, hers)

Sr. Lab Safety Specialist

Environmental Health and Radiation Safety

University of Pennsylvania

3160 Chestnut St., Suite 400

Philadelphia, PA 19104-6287

Office: 215-746-6549

Voice/cell/text: 215-651-0557

fax: 215-898-0140

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Jeff
Jeffrey A. Your, M.B.A., C.S.M.M. - Science Buyer
Manager, Central Scientific Stores and Laboratory Support Services

Chair, University Sustainability Committee



John Carroll University
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University Hts, Ohio 44118-4538

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