From: yes <adkb**At_Symbol_Here**COMCAST.NET>
Subject: Re: [DCHAS-L] "Hydrogen pop" demo and PPE
Date: Sat, 2 Jan 2021 23:53:56 -0600
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID: 35tku6sej8-1**At_Symbol_Here**m0191393.ppops.net
In-Reply-To


Many, many moons ago, as a graduate assistant, and, I must add, with some visual impairment, I was notorious for requiring my students in lab to wear eye protection and not just spectacles. If the student normally wore spectacles, then side shields mandatory. Else full goggles. When necessary, a face shield as well.

 

The importance of such ritual was brought home when one lad cranked up the flame way too high to, he hoped, speed up a distillation. Instead he sped up an explosion, which you can imagine, was heard far and wide. A picture taken shortly afterward showed the clear outline of where his safety goggles had been and where they had not. He fortunately only got a facefull of organic gook and little shards of glass. No major injury..

 

That picture, as far as I know some decades later, is still is displayed in the teaching laboratories at U of MN.

 

Some teaching aids never outgrow their utility.

 

Happy New Year, you all.

 

Sent from Mail for Windows 10

 

From: Landgrebe, Virginia HS Teacher - Science
Sent: Saturday, January 2, 2021 8:04 PM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: Re: [DCHAS-L] "Hydrogen pop" demo and PPE

 

Fire, glass and chemicals? Is there really a question about what should be worn?

 

 

On Tue, Dec 29, 2020 at 12:19 PM Kemsley, Jyllian <J_Kemsley**At_Symbol_Here**acs.org> wrote:

Hi all--I'd appreciate any thoughts on someone wearing just eye protection for this demo. On the one hand, it's a small amount and the test tubes don't have constricted necks. On the other hand, it looks like a glass tube held in bare hands near the face.

 

https://twitter.com/I_am_Endeavour/status/1340788101283803140

 

It's been suggested as something to post in C&EN's "Chemistry in Pictures" collection for New Year's Eve, and I need to decide by tomorrow (Wednesday 12/30) whether to go ahead.

 

Thanks for your input!

Jyllian

 

Jyllian Kemsley, PhD [she/her/hers]

Executive Editor, policy and content partnerships

Chemical & Engineering News

M:  (+1) 925-519-6681 | Skype: jyllian.kemsley

Twitter: **At_Symbol_Here**jkemsley

Want to be in the know? Sign up for C&EN's weekly newsletter: cenm.ag/censubscribe

 

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--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas

 

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