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<div>I know Airgas has returnable lecture bottles for chlorine. They are low pressure cylinders. They are called Saf-T-Cylinders. Not sure if they have the same in HBr<br>
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On Jan 7, 2015, at 2:00 PM, Himmer, Phil <<a href="mailto:PhilH@ee.montana.edu">PhilH@ee.montana.edu</a>> wrote:<br>
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<div>Hello,
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<div>Does anyone have any practical experience using Chlorine and Hydrogen Bromide gas past it’s expiration date? We use the gas for ICP etching of chrome and aluminum.</div>
<div>We have small cylinders(air liquide 7-size) of each that still have gas in them but are now years past the expiration date. I have pulled them from the gas cabinet with the plan to replace them but am having difficulty finding a vendor who offers these
gasses in these small volumes. We are trying to not use lecture bottles due to disposal considerations.</div>
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<div>looking forward to suggestions</div>
<div>phil</div>
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<div>Dr. Phillip Himmer</div>
<div>Manager Montana Microfabrication Facility</div>
<div>Montana State University</div>
<div>Bozeman Mt 59717</div>
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<div>Office Ph: 406-994-7178</div>
<div>email:<span class="Apple-tab-span" style="white-space: pre;"> </span><a href="mailto:philh@ece.montana.edu">philh@ece.montana.edu</a></div>
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