[labnetwork] Providing chemical gloves to users

Wed Nov 9 09:09:39 EST 2022

The quality of the Trionic gloves seems to have changed for the worse 
about the same time they changed their packaging during the pandemic, 
going from a pair of gloves in a sealed bag to a dozen pairs loose in a 
bag and closed by the same bag lock they use on loaves of bread.

Here at Wisconsin, we issue each lab member who uses our corrosives 
benches their own pair of gloves in their appropriate size, along with a 
large Ziplock bag to store them in. This seems to slow the deterioration 
of the glove material.

We teach lab members to do inflation testing by stretching the glove's 
cuff taught, spinning it to seal it, and squeezing it. In our lab, many 
of the N2 guns are inside the wet benches, and lab members may not reach 
into the bench without gloves on, so they can't use those guns to do 
inflation testing.

- Quinn

On 11/8/2022 1:44 PM, Owain Clark wrote:
>
> We also see the issue of drying out with the Trionic gloves, and from 
> speaking to other cleanrooms it is a common story. I theorise 
> something in the production may have changed as we did not have a real 
> problem until 1-2 years ago when it abruptly drastically accelerated 
> and gloves from some production batches would start to fail in a 
> matter of days. Whitening and then cracking at the fingertips is the 
> typical first point of failure. We put it down to air humidity control 
> after a short investigation, daily moistening with ultra-pure water 
> prolonged lifetime for us. Being exposed to light seemed to accelerate 
> the process also. Now we keep a pair of gloves per user stored in a 
> labelled box inside a dark cupboard away from room airflow, no more 
> issues since.
>
> Inflation testing is vital, we use these gloves on top of CR gloves 
> and due to potential hazards of HF and fuming nitric in particular 
> chances cannot be taken. We also tape out areas around benches, not to 
> be entered without acid PPE (gloves, apron, full face visor)and not to 
> be left without cleaned and dried acid gloves.
>
> We also stock hexaflorine and diphoterine close to the acid benches, 
> all users to be trained in their use and rapid response requirements. 
> No HF processing without a hexaflourine trained backup (staff or user) 
> nearby within response time in case of incident.
>
> Owain.
>
> *From:*labnetwork <labnetwork-bounces at mtl.mit.edu> *On Behalf Of 
> *Matthew Moneck
> *Sent:* 08 November 2022 14:54
> *To:* Hollingshead, Dave <hollingshead.19 at osu.edu>; Nathanael Sieb 
> <sieb at 4dlabs.ca>; labnetwork at mtl.mit.edu
> *Subject:* Re: [labnetwork] Providing chemical gloves to users
>
> *CAUTION:*This e-mail originated outside the University of Southampton.
>
> Hi Eric,
>
> We use the same procedure as Dave highlighted below, including the use 
> of shared trionic gloves.  I will add that we ask our users to double 
> glove with our standard cleanroom nitrile gloves ahead of donning the 
> chemical gloves.  In addition, we have a taped off safety zone around 
> the benches.  In order to avoid potential contamination of other 
> surfaces in the lab, we instruct users not to wear the gloves outside 
> of that zone.
>
> I should also note that we consider the procedure Dave described for 
> inflating the gloves (i.e. leak checking)prior to use to be very 
> important, as we have found that the trionic gloves do dry out and 
> ultimately crack in the cleanroom environment, especially with 
> continued exposure to DI water.  We therefore swap them out regularly.
>
> Best Regards,
>
> Matt
>
> --
>
> *Matthew T. Moneck, Ph.D*
>
> Executive Director, Claire & John Bertucci Nanotechnology Laboratory
>
> Electrical & Computer Engineering | Carnegie Mellon University
>
> 5000 Forbes Avenue, Pittsburgh, PA 15213-3890
>
> Phone: 412-268-5430
>
> ece.cmu.edu 
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> *From:*labnetwork <labnetwork-bounces at mtl.mit.edu> *On Behalf Of 
> *Hollingshead, Dave
> *Sent:* Wednesday, November 2, 2022 1:51 PM
> *To:* Nathanael Sieb <sieb at 4dlabs.ca>; labnetwork at mtl.mit.edu
> *Subject:* Re: [labnetwork] Providing chemical gloves to users
>
> Hi Eric,
>
> We provide shared Trionic gloves for our heavy chemical PPE needs. 
> They are replaced as needed with an extra supply that is kept next to 
> each wet bench. We also make a particular point during our hood 
> training that users must leak check the shared gloves prior to each 
> use by inflating with N2. They are required to demonstrate this 
> technique before we check them off on the hood.
>
> -Dave
>
> *From:*labnetwork <labnetwork-bounces at mtl.mit.edu> *On Behalf Of 
> *Nathanael Sieb
> *Sent:* Tuesday, November 1, 2022 19:24
> *To:* labnetwork at mtl.mit.edu
> *Subject:* Re: [labnetwork] Providing chemical gloves to users
>
> Hi Eric, In our facility we have levels of PPE required.  Inside the 
> Clean Room standard cleanroom gloves are required at all times to 
> prevent particle contamination.   A second pair of gloves is required 
> for any work on the wet-benches or spin
>
> Hi Eric,
>
> In our facility we have levels of PPE required.  Inside the Clean Room 
> standard cleanroom gloves are required at all times to prevent 
> particle contamination.  A second pair of gloves is required for any 
> work on the wet-benches or spin coaters.  These gloves are single-use 
> and can be disposed of in the Clean Room solid chemical waste if they 
> get contaminated.  For HF, BOE, Nanostrip, acids, etc., a third pair 
> of elbow-length thicker nitrile gloves, an apron, and a face shield is 
> required.  These items are dedicated for the acid work and re-usable.  
> We would replace them if they are damaged.
>
> Outside the Clean Room we have similar protocols except we don't have 
> the initial layer to prevent particle contamination and we don't use 
> cleanroom-grade gloves.
>
> I hope that helps a bit.
>
> Thanks,
> Nathanael
>
> On 2022-11-01 9:07 a.m., Eric Johnston wrote:
>
>     Hi All
>
>     We are reassessing how we should be providing heavier chemical
>     gloves for our users, especially for use with HF. I am curious
>     about how everyone else is handling these types of gloves. For
>     example:
>
>     - Is each user responsible for their own pair of gloves?
>
>     - Is there a common set of gloves that are replaced periodically?
>
>     - Are chemical gloves single use and then disposed of?
>
>     - Do you use one type of glove material for all processing?
>
>     I would be happy to summarize the responses for everyone.
>
>     Thanks
>
>     Eric
>
>
>     Eric Johnston
>
>     Director, Quattrone Nanofabrication Facility
>
>     Singh Center for Nanotechnology
>
>     University of Pennsylvania
>
>     3205 Walnut Street, #116
>
>     ericdj at seas.upenn.edu <mailto:ericdj at seas.upenn.edu>
>
>     T. 215.573.6695 <tel:215.573.6695>
>
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-- 
Quinn Leonard
Nanoscale Fabrication Center
University of Wisconsin-Madison

Room 3112 Engineering Centers Building
1550 Engineering Drive
Madison, WI 53706

(608) 890-3030
https://wcnt.wisc.edu/center-for-nanoscale-fabrication-2/
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