From: margie.brazelton**At_Symbol_Here**AM.DYNONOBEL.COM
Subject: Re: [DCHAS-L] Nitric oxide and nitrogen dioxide cylinders
Date: Wed, 25 Feb 2015 14:40:59 -0700
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: OF740BFBB6.4631E45C-ON87257DF7.0076EABE-87257DF7.00771C49**At_Symbol_Here**

hi, chris !  we use nitric oxide cylinders as standards for our NOx emissions analyzers.  we get the certified cylinders from airgas.  our c of a's do not have an expiration date on them.  i would suggest you contact your supplier or and ask them!

Best regards,
Margie Brazelton
Senior Process Chemist

Dyno Nobel Inc.
A business of Incitec Pivot Limited
Cheyenne Plant, P.O. Box 1287 / Cheyenne, WY 82003, 8305 Otto Road / Cheyenne, WY 82001, USA
Office: +1 307 637 2766 | Fax: +1 307 771 5637  | Mobile: +1 307 631 8368

Groundbreaking Performance Through Practical Innovation

From:        "Kohler, Christopher E" <cekohler**At_Symbol_Here**IU.EDU>
To:        DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU
Date:        02/25/2015 01:46 PM
Subject:        [DCHAS-L] Nitric oxide and nitrogen dioxide cylinders
Sent by:        DCHAS-L Discussion List <dchas-l**At_Symbol_Here**MED.CORNELL.EDU>

Greetings listers,
Has anyone ever heard of a limited shelf-life for cylinders of nitrogen dioxide or nitric oxide?
Both are toxic oxidizers.
Many thanks,
Christopher E. Kohler
Laboratory Safety Manager
University Environmental Health and Safety
Indiana University
1514 E Third Street
Bloomington, IN 47405
(812) 855-5454

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