From: Harry J. Elston <helston**At_Symbol_Here**MIDWESTCHEMSAFETY.COM>
Subject: Re: [DCHAS-L] Chemical Inventory
Date: Mon, 1 Aug 2016 20:09:52 -0500
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: CAJ2hcffY_WUap7TTnRwfur8kWKipttAOLCL2z-WfZOe8fu727A**At_Symbol_Here**

One of Elston's rules for chemical inventory management: If you haven't used it for 3 years, you don't need it. Some exceptions apply, but they are rare.

There are a few other rules, such as "expiration dates probably aren't" for most purposes. I think Ralph hit a good point - you're taking up valuable lab space.


On Fri, Jul 29, 2016 at 3:46 PM, Hannah Corcoran <bffblue14**At_Symbol_Here**> wrote:
Our research lab is currently updating the chemical inventory. Other than bottles/containers that are broken/cracked, I'd appreciate any advice on discerning which chemicals can be purged or disposed of. Many of the chemicals are dated over 20 years ago, but I know of at least a few that have an indefinite shelf life.

Any guidance in this area is quite welcome.

Thank you,

Hannah Corcoran

Harry J. Elston, Ph.D., CIH
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Twitter: **At_Symbol_Here**MidwestChemSafe

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