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<p>Dear Labnetwork,</p>
<p>As many labs do, because of safety concerns for the students, I
banned the use the real pirahna etch in favor of Purestrip
(Transene version of nanostrip). The problem I have is that the
solution eventually leaks from the bottle. I have heard of others
mentioning this also. </p>
<p>I am now thinking of revising this policy and going back to old
pirahna, despite the issues with safety and aging H2O2.</p>
<p>Anyone have comments?</p>
<p>Mario</p>
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<img src="cid:part1.YxQWtW5f.1Z5jER2R@physics.ubc.ca" border="0"></div>
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