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Ethylene Oxide


               
2021 Sep 9, 5:34pm   2,642 views  20 comments

by GreaterNYCDude   follow (2)  

Ethylene Oxide (EO) is a great sterilizer because it kills everything and it's small enough of a molecule to penetrate most packaging (cardboard, shrink wrap plastic, etc.). Problem is... it kills everything and is not only a carcinogen but also highly flammable. Handle with care.


Despite the dangers if misused, it's a precursor to a wide range of common chemicals, including surfactants, detergents and other industrial products.

It's also been used for sterilizing medical equipment for years. With respect to sterilization it's a better alternative than heat, which would damage certain plastics and / or electronics, or UV (or microwave) which has its own issues and challchallenges.

For any medical product from bandages to stents to pacemakers to nasal swabs and a whole assortment of medical products and devices EO has been the sterilization of choice.

Stick a pallet in a chamber, hold in an EO environment for enough time to kill the bacteria that may be present, then evacuate the chamber and back purge with nitrogen. Flush the chamber out a few times by purging / evacuating to ensure there is little if any EO left in the product that finds its way to the consumer.

I bring this up because I've seen some misinformation about the use of EO in the cotton swabs used for nasal testing for Covid and similar respiratory diseases. These products to not expose you to EO.

For those of you wondering... what do they do with the EO they purge out of the srerilization chamber? It's sent through an Air Scrubber which converts the EO to less toxic (and more useable) Ethylene Glycol, one of the primary ingredients in Antifreeze. Due to regulatory changes over the past few years, EO regulations gave been tightened and most facilities either have installed or are in the process of installing additional abatement measures.How do I know all this? Experience.Now I'm no apologist for the chemical industry, nor am I a shell for big pharma, but I figure my expertise having been in and around EO for years it was worth setting the record straight. Let's deal in facts not fear.

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13   DhammaStep   @   2021 Sep 10, 10:18am  

I was pretty adverse to EO based on things I saw, but it really is useful to know they sterilize plenty of daily use first aid products with it. Thanks.

What bothers me is the neccessity of shoving the swab way up the nose, when apparently we are supposed to be afraid of people casually breathing within six feet of us.

https://www.the-scientist.com/sponsored-article/a-new-covid-19-spit-test-is-as-easy-as-1-2-3-69090

This spit test seems more reasonable. However, I simply disagree on the idea that healthy individuals should get tested at all. Innocent until proven symptomatic, because asymptomatic spread is hardly a driver increased infection. Just another bit of madness in it all.
14   mell   @   2021 Sep 10, 10:27am  

DhammaStep says
I was pretty adverse to EO based on things I saw, but it really is useful to know they sterilize plenty of daily use first aid products with it. Thanks.

What bothers me is the neccessity of shoving the swab way up the nose, when apparently we are supposed to be afraid of people casually breathing within six feet of us.

https://www.the-scientist.com/sponsored-article/a-new-covid-19-spit-test-is-as-easy-as-1-2-3-69090

This spit test seems more reasonable. However, I simply disagree on the idea that healthy individuals should get tested at all. Innocent until proven symptomatic, because asymptomatic spread is hardly a driver increased infection. Just another bit of madness in it all.


Fully agreed. Also nowadays they shouldn't shove it up your nose anymore, just a gentle swab the beginning by the nostrils should be enough.
15   Patrick   @   2021 Sep 10, 1:27pm  

And if you can personally do it, how do they know what you swiped?
16   mell   @   2021 Sep 10, 1:32pm  

Patrick says
And if you can personally do it, how do they know what you swiped?


Not sure if they allow it but they could test if at least contains snot ;) Also my wife had to do one in the hospital where they were watching here self-swab. There no standards and this whole thing is ludicrous.
17   Patrick   @   2021 Nov 5, 1:18pm  

https://cyprus-mail.com/2021/10/26/union-calls-for-suspension-of-rapid-testing-after-toxic-substance-found/?eType=EmailBlastContent&eId=c5ac8eb3-433a-4c65-8174-6e51f8e812da


A union representing the rights of public-sector workers has called for the suspension of rapid tests for the coronavirus, after media reports showed a swab contained multiple times the permissible trace level of ethylene oxide, a toxic substance.

The Isotita (Equality) union said rapid tests – which under current protocols thousands of people need to take every 72 hours for work – should be immediately discontinued until health authorities have investigated the matter and determined any health risks.

Citing the European Chemicals Agency, the union said ethylene oxide – a substance used to coat and sterilise PCR and rapid test nasal swabs – is toxic, carcinogenic and mutagenic even when inhaled.
18   Patrick   @   2021 Nov 16, 5:45pm  

https://thinkcivics.com/leading-covid-test-firm-is-planning-to-sell-swabs-with-customers-dna/

Leading COVID Test Firm Is Planning To Sell Swabs With Customer’s DNA
ThinkCivics Newswire by THINKCIVICS NEWSWIRE November 15, 2021
19   GreaterNYCDude   @   2021 Nov 16, 7:24pm  

@patrick thanks for the link. Interesting.

I also came across a report that discusses EO exposure from medical equipment l.. seems it varies widely but will dissipate with time.

https://apps.who.int/iris/bitstream/handle/10665/38815/9241541954-eng.pdf

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