text stringlengths 1 2.97k |
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Hello all, |
We have been having difficulty getting a cylinder of O2 8%/CF4. We |
placed an order in early November 2022 with Linde and have yet to |
receive a ship date for the material. We have three orders out, but need |
the material urgently. The shortest lead time we have found is 9 weeks. |
Does anyone have any contacts for purchasing this gas or other options |
for obtaining a cylinder of this gas? Is anyone else experiencing this |
type of lead time for gas cylinders? |
Thank you, |
John |
----------------------------------- |
John Tamelier, Ph.D. |
Interim Director - Nano3 |
University of California, San Diego |
Atkinson Hall, 5th Floor Front Desk, M/C 0436 |
9500 Gilman Drive |
La Jolla, California 92093-0436 |
Phone: (858) 246-2735 |
Fax: (858) 534-9092 |
E-mail: jtamelier at ucsd.edu<mailto:jtamelier at ucsd.edu> |
http://nano3.calit2.net<https://linkprotect.cudasvc.com/url?a=http%3a%2f%2fnano3.calit2.net&c=E,1,UnK73e8Ez6v_oSTX1WMQ4LV6fYJCHfdIQ9f2uxJgp0U2UIF6Ga0K26FigCbcLr4FaXDIPu6UxlQjTuoSv62Rmrlk7ky5vcbRtZ3jyFe5LRVbO2cmUkU2&typo=1> |
---------------------------------- |
_______________________________________________ |
labnetwork mailing list |
labnetwork at mtl.mit.edu<mailto:labnetwork at mtl.mit.edu> |
https://mtl.mit.edu/mailman/listinfo.cgi/labnetwork |
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From savithap at iisc.ac.in Wed Feb 15 07:19:03 2023 |
From: savithap at iisc.ac.in (Savitha P) |
Date: Wed, 15 Feb 2023 12:19:03 +0000 |
Subject: [labnetwork] HF storage |
Message-ID: <MA1PR01MB399567893801A2B30E2EA9E0EFA39@MA1PR01MB3995.INDPRD01.PROD.OUTLOOK.COM> |
Hi! |
We recently had a couple of occasions where users had mistakenly used Hydrofluoric acid in place of Hydrochloric acid during RCA cleaning. To avoid this, one of the suggestions we have received from our OLSEH is to store HF in a different coloured bottle (currently all acids are stored in white translucent polypropylene bottles which are properly labelled). Accordingly, we had considered storing HF in opaque, brown colour HDPE bottles. However, that was not deemed acceptable by a section of users saying bottles should be translucent so that acid level inside can be judged. |
Could you please let me know how small quantities of HF are stored in your respective fabs. Is there any regulation governing storage of HF, so that we could implement the same. |
Thanks and regards, |
Savitha |
Dr. Savitha P |
Chief Operating Officer |
National Nanofabrication Centre |
Centre for Nanoscience and Engineering |
Indian Institute of Science |
Bangalore - 560012 |
India. |
Ph. +91 80 2293 3319 |
www.cense.iisc.ac.in |
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From hosler0 at purdue.edu Wed Feb 15 10:03:43 2023 |
From: hosler0 at purdue.edu (Hosler, Richard S) |
Date: Wed, 15 Feb 2023 15:03:43 +0000 |
Subject: [labnetwork] HF storage |
In-Reply-To: <MA1PR01MB399567893801A2B30E2EA9E0EFA39@MA1PR01MB3995.INDPRD01.PROD.OUTLOOK.COM> |
References: <MA1PR01MB399567893801A2B30E2EA9E0EFA39@MA1PR01MB3995.INDPRD01.PROD.OUTLOOK.COM> |
Message-ID: <CH2PR22MB1781BB0C2C45B9ADFFA9B6AE9CA39@CH2PR22MB1781.namprd22.prod.outlook.com> |
For our RCA process at Purdue/BNC, we have a small (6ft.) dedicated Kinetics RCA cleaning hood with heated below deck level baths for SC1/SC2 and a smaller unheated bath for HF. I have installed a separate cabinet for the HF and HCl adjacent to the hood. This is marked as for RCA only to a) separate the RCA supplies from the main supply and b) to shorten the distance between the cabinet and hood. |
The HF is in a smaller semi-opaque white bottle that is easy to determine the level. The HCl bottles are double the size and glass. Each has their own shelf to visually separate them as well. H2O2 goes into a small fridge on the other side of the hood, again to separate the supply and provide quick access. |
Access to this hood is restricted by requiring a 2 hour training session in which the user sets up, uses, and cleans up the process from start to finish. Prior HF procedures that are outlined originally in the cleanroom access training are reinforced here and the nearest HF exposure kit (6ft behind the user) is pointed out. |
Basically the strategy is a sort of defense-in-depth of individual mistake-proofing features. To my knowledge we haven't had any exposure incidents stemming from this hood in the ~4 years it's been operational. |
My catchphrase when working with RCA and Piranha is as follows: "If you ever stop being scared and respectful of these chemicals, you need to stop working with them." |
Rich Hosler |
Research Engineer (Thermal/PECVD) |
Purdue University - Birck Nanotechnology Center |
hosler0 at purdue.edu |
From: labnetwork <labnetwork-bounces at mtl.mit.edu> On Behalf Of Savitha P |
Sent: Wednesday, February 15, 2023 7:19 AM |
To: labnetwork at mtl.mit.edu |
Subject: Re: [labnetwork] HF storage |
---- External Email: Use caution with attachments, links, or sharing data ---- |
Hi! |
We recently had a couple of occasions where users had mistakenly used Hydrofluoric acid in place of Hydrochloric acid during RCA cleaning. To avoid this, one of the suggestions we have received from our OLSEH is to store HF in a different coloured bottle (currently all acids are stored in white translucent polypropylene bottles which are properly labelled). Accordingly, we had considered storing HF in opaque, brown colour HDPE bottles. However, that was not deemed acceptable by a section of users saying bottles should be translucent so that acid level inside can be judged. |
Could you please let me know how small quantities of HF are stored in your respective fabs. Is there any regulation governing storage of HF, so that we could implement the same. |
Thanks and regards, |
Savitha |
Dr. Savitha P |
Chief Operating Officer |
National Nanofabrication Centre |
Centre for Nanoscience and Engineering |
Indian Institute of Science |
Bangalore - 560012 |
India. |
Ph. +91 80 2293 3319 |
www.cense.iisc.ac.in<http://www.cense.iisc.ac.in> |
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From deolivei at ualberta.ca Wed Feb 15 11:25:19 2023 |
From: deolivei at ualberta.ca (Gustavo de Oliveira Luiz) |
Date: Wed, 15 Feb 2023 09:25:19 -0700 |
Subject: [labnetwork] HF storage |
In-Reply-To: <CH2PR22MB1781BB0C2C45B9ADFFA9B6AE9CA39@CH2PR22MB1781.namprd22.prod.outlook.com> |
References: <MA1PR01MB399567893801A2B30E2EA9E0EFA39@MA1PR01MB3995.INDPRD01.PROD.OUTLOOK.COM> |
<CH2PR22MB1781BB0C2C45B9ADFFA9B6AE9CA39@CH2PR22MB1781.namprd22.prod.outlook.com> |
Message-ID: <CALPuYFw=HC5S3JigEy+KxTP7D52Cb6_-nhi9qW2e+n+60-u2JA@mail.gmail.com> |
Hi Savitha, |
Here at the University of Alberta's nanoFAB, we store HF and HCl in |
completely separate cabinets. In fact, the HF cabinet only contains 49%-HF, |
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