[labnetwork] N2 grade for blow guns

[Keith Barnes]

I would think that you wouldn't want utility N2 in your clean room at all! The cost of using a purifier to clean up low flows of N2 would not be prohibitive.

Thank you,

Keith F. Barnes
Sales Representative
SEMITORR
sales distribution service

6336 Patterson Pass Road Suite H
Livermore, CA 94550

tel:   925.667.3607
cell:  925.337.2221
email:  kbarnes at semitorrinc.com<mailto:kbarnes at semitorrinc.com>
web:  www.semitorrinc.com
[bottom signature graphic]

From: labnetwork-bounces at mtl.mit.edu [mailto:labnetwork-bounces at mtl.mit.edu] On Behalf Of Tom Britton
Sent: Friday, January 11, 2013 12:56 PM
To: Iulian Codreanu; Fab Network
Subject: Re: [labnetwork] N2 grade for blow guns


Hi Iulian,



Back in my component distribution days I was the Entegris (Fluoroware at the time) rep and we hardly ever had Fabs use utility N2 in blow guns inside the cleanroom due to the possibility of particulate being blown into the fab air. Whether or not it would have mattered in a laminar flow environment is debatable, but this is what the Fabs did. This being said, you're not in a production environment, so the question becomes two-fold. First, is potentially particulate laden air, or the moisture/molecular contamination in utility N2 going to cause any issue with other devices/wafers in your clean room, and second, is what you are going to blow off with the guns sensitive to particles, moisture or molecular contamination. If the answer to these questions is no, I would recommend utility N2 for cost purposes.



Good luck!

Tom Britton
Sales Manager
Critical Systems, Inc.
7000 W. Victory Road
Boise, ID 83709
Direct: 208-890-1417
Shop:   877-572-5515
www.criticalsystemsinc.com<http://www.criticalsystemsinc.com>

"World Leader in UHP Reconditioned Gas
   Delivery & Abatement Technologies"








-----Original Message-----
From: labnetwork-bounces at mtl.mit.edu<mailto:labnetwork-bounces at mtl.mit.edu> [mailto:labnetwork-bounces at mtl.mit.edu] On Behalf Of Iulian Codreanu
Sent: Friday, January 11, 2013 9:41 AM
To: Fab Network
Subject: [labnetwork] N2 grade for blow guns



Dear Colleagues,



Would it be overkill or a good idea to supply high purity nitrogen (instead of utility nitrogen) to the blow guns located in cleanroom fume hoods?



Thank you for your help.



Iulian



--

iulian Codreanu, Ph.D.

Director of Operations, UD Nanofab

149 Evans Hall

Newark, DE 19716

302-831-2784





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