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<p>Dear Peter --</p>
<p><br>
</p>
<p>At the Stanford Nanofab, we do the same as at Harvard. Indeed, I
believe that most university cleanrooms where full bunnysuit
protocols are observed will do the same. <br>
</p>
<p><br>
</p>
<p>At SNF, we have three different kinds of dress protocols. The
main cleanroom is the full, standard cleanroom suit, where
researchers don full chemical aprons, gloves, and face shields
over safety glasses when working with chemicals at wet stations.
We have several rooms where the cleanliness standard is a
dust-free lab coat (plus bouffant, booties, and cleanroom
gloves). Like the cleanroom suits, the dust-free coat is not
designed for chemical protection - researchers don acid gear when
working with chemicals at the wet stations. We have one room with
standard fume hoods - it is keycard access only to researchers who
undergo additional training. This is not a cleanroom and in
addition to safety glasses, researchers wear the standard 100%
cotton lab coats which offers better protection than polymer-based
dress - basically, the same protocols as you would use in a
standard research chemistry lab.<br>
</p>
<p><br>
</p>
<p>While it is more inconvenient to have to don chemical protection
over clean dress, I think it is actually better for lab
practices. First, it helps isolate chemical residues because
small splashes and spray will get on gloves and sleeves and spread
throughout the lab, wherever the researchers go. (I've worked in
industry labs where corroded computer keyboards and landline
phones near wet stations were the norm.) Second, by donning acid
gear, people have to consciously recognize they are working with
hazardous materials - and that mental preparedness is important,
at least with students, who often take their well-being for
granted.<br>
</p>
<p><br>
</p>
<p>The alternative is cleanroom grade Nomex, which at nearly
$1K/suit, is cost prohibitive for university cleanrooms and, I
suspect, uncomfortably hot to wear....</p>
<p><br>
Mary<br>
</p>
<p><br>
</p>
<p>__</p>
<p>Mary X. Tang, Ph.D.<br>
Managing DIrector<br>
Stanford Nanofabrication Facility<br>
Paul G. Allen Building, Room 141<br>
Stanford, CA. 94305</p>
<p><a class="moz-txt-link-freetext" href="https://snf.stanford.edu">https://snf.stanford.edu</a></p>
<p><a class="moz-txt-link-abbreviated" href="mailto:mtang@stanford.edu">mtang@stanford.edu</a><br>
</p>
<br>
<div class="moz-cite-prefix">On 10/11/2018 6:09 PM, Hathaway,
Malcolm R wrote:<br>
</div>
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<p style="margin-top:0;margin-bottom:0">Hi Peter,</p>
<p style="margin-top:0;margin-bottom:0"><br>
</p>
<p style="margin-top:0;margin-bottom:0">So, generally, your
"clean room" suit (full suit) is not intended to be chemical
protection, but rather cleanroom protection. "Lab coats", on
the other hand, are thicker, and do offer some chemical
protection, but as you note, they are not usually cleanroom
compatible. In our cleanroom at Harvard, in areas where
serious chemical protection is needed, we provide
polypropylene chemical aprons, which are worn over the
cleanroom suit.
<br>
</p>
<p style="margin-top:0;margin-bottom:0"><br>
</p>
<p style="margin-top:0;margin-bottom:0">What class of cleanroom
are you working in? What chemicals are you trying to protect
against?</p>
<p style="margin-top:0;margin-bottom:0"><br>
</p>
<p style="margin-top:0;margin-bottom:0"><br>
</p>
<p style="margin-top:0;margin-bottom:0">Mac Hathaway</p>
<p style="margin-top:0;margin-bottom:0">Safety Officer and
Senior Systems/Process Engineer<br>
</p>
<p style="margin-top:0;margin-bottom:0">Center for Nanoscale
Systems</p>
<p style="margin-top:0;margin-bottom:0">Harvard University<br>
</p>
<p style="margin-top:0;margin-bottom:0"><br>
</p>
</div>
<hr style="display:inline-block;width:98%" tabindex="-1">
<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt"
face="Calibri, sans-serif" color="#000000"><b>From:</b>
<a class="moz-txt-link-abbreviated" href="mailto:labnetwork-bounces@mtl.mit.edu">labnetwork-bounces@mtl.mit.edu</a>
<a class="moz-txt-link-rfc2396E" href="mailto:labnetwork-bounces@mtl.mit.edu"><labnetwork-bounces@mtl.mit.edu></a> on behalf of Peter Hung
<a class="moz-txt-link-rfc2396E" href="mailto:peter.hung@aero.org"><peter.hung@aero.org></a><br>
<b>Sent:</b> Thursday, October 11, 2018 6:14:30 PM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:labnetwork@mtl.mit.edu">labnetwork@mtl.mit.edu</a><br>
<b>Subject:</b> [labnetwork] Cleanroom Lab Coats</font>
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<p class="x_MsoNormal">Hi Everyone, I know that this had
probably been discussed before, but can you tell me what
material/vendor you have for your lab coats? It looks like
what we’re currently using are more suited for ESD
protection for the parts and not necessary the best for
protecting users from chemical. The chemical lab coats we
have here would seem to shed and not be compatible with
cleanroom. Is there some sort of hybrid that you use? Or
maybe just something that protects the users a bit more and
still suitable for cleanroom? Thanks!</p>
<p class="x_MsoNormal"> </p>
<p class="x_MsoNormal">Peter Hung, PhD</p>
<p class="x_MsoNormal">Project Leader</p>
<p class="x_MsoNormal">S&T Strategy and Development</p>
<p class="x_MsoNormal">The Aerospace Corporation</p>
<p class="x_MsoNormal"><a href="mailto:Peter.hung@aero.org"
moz-do-not-send="true"><span style="color:#0563C1">Peter.hung@aero.org</span></a>
</p>
<p class="x_MsoNormal">310.336.5238</p>
<p class="x_MsoNormal"> </p>
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