[labnetwork] Providing chemical gloves to users

Tue Nov 8 14:44:00 EST 2022

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

--
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From: labnetwork <labnetwork-bounces at mtl.mit.edu<mailto: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<mailto:sieb at 4dlabs.ca>>; labnetwork at mtl.mit.edu<mailto: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<mailto:labnetwork-bounces at mtl.mit.edu>> On Behalf Of Nathanael Sieb
Sent: Tuesday, November 1, 2022 19:24
To: labnetwork at mtl.mit.edu<mailto: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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