<div dir="ltr"><div><div class="gmail_default" style="font-family:arial,sans-serif">Nathaniel,</div><div class="gmail_default" style="font-family:arial,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,sans-serif">Good morning. Here at UofMichigan, we've been doing just that since 2010 with several tools (running them into a single POU abatement system) with no issues. You have to remember that your POU scrubbers will be upstream of your exhaust fans, and that will keep the abatement negative relative to what's feeding in upstream of them. As long as you size them for the capacity of your tools, you shouldn't have any issues.</div><div class="gmail_default" style="font-family:arial,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,sans-serif">Our units are an Airguard Cyclone Fume Scrubber, and a Pure Air Systems S.DOC series.</div><br clear="all"></div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div>Dennis<span class="gmail_default" style="font-family:arial,sans-serif"> Schweiger</span></div><div><span class="gmail_default" style="font-family:arial,sans-serif">Facilities</span></div><div><span class="gmail_default" style="font-family:arial,sans-serif">University of Michigan/LNF</span></div><div> </div><div>734.647.2055 Ofc<br></div></div></div><br></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Fri, Jul 11, 2025 at 7:39 AM Nathanael Sieb <<a href="mailto:sieb@4dlabs.ca">sieb@4dlabs.ca</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><u></u>
<div>
<p>Hi all,</p>
<p>We are working on installing a new VHF system and a PECVD in our
lab. We are looking at dry scrubbers for the gas abatement. One
question is whether we purchase one larger system for both tools
or get a smaller one for each tool. Has anyone manifolded two
separate tools into one abatement scrubber? </p>
<p>I have 2 main concerns:</p>
<p>- waste gas from one operating tool back-flowing into the other
shut-down tool</p>
<p>- 'using up' the neutralizing capacity for one tool before the
other (i.e., heavier than expected usage on one tool resulting in
a need to change the canister even though the other tool can be
neutralized fine)</p>
<p>I would appreciate any feedback folks could offer!</p>
<p>Also, if you have any opinions on potential systems, please feel
free to reach out to me directly.</p>
<p>Thanks,</p>
<p>Nathanael<br>
</p>
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