That sort of build up could be mold but is much more likely to be dirt, kint, etc. Coated with chemical vapors. These type build ups are usually very combustible and should be removed whenever they become noticably deep. Better to have a professional do it.

On Sat, Mar 4, 2023 at 4:54 AM, David C. Finster

<dfinster**At_Symbol_Here**WITTENBERG.EDU> wrote:

I am forwarding below a question from a colleague.   A picture was attached:  it shows the interior of the snorkel that is lined with “black muck/solids”.

 

I have a question about lab snorkels.  Recently one came open (at the joint), and I looked inside.  I have attached the picture of what I saw.   There is black lint, and it probably looks like the inside of a dryer vent. 

 

I wondered if we should be concerned about this?  Should we try and clean it ourselves, or is it better to have it professionally cleaned?  Are there any immediate safety concerns? 

 

I seek authoritative answers.

 

Thanks

 

Dave

 

 

David C. Finster
Professor Emeritus, Department of Chemistry
Wittenberg University

 

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