Hi, Karen.
I totally understand where you're coming from.
I have three little brothers, and one older than me, not to mention 5
sisters. And 32 first cousins.
I have kept my toothbrush, razor, soap, shampoo, candy, socks,
underwear, cash, and comic books and all other personal effects locked
up and hidden away since I was about 3 years old. I honed my defensive
driving skills while on my tricycle, and since I got my driver's
license, I have never been in an accident. I trained the family dog to
attack anyone approaching my personal trunk.
I learned at an early age how to wash hands and wipe on a clean towel,
and use the towel to open the door.
Don't touch anything.
My favorite song when I was a kid had the line; "I keep my eyes wide
open all the time...."
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Karen Tellefsen
Sent: Tuesday, April 28, 2009 8:42 AM
To: [log in to unmask]
Subject: Re: [TN] Hand Sanitizer and PCB Assembly
I found this:
The Center for Disease Control and Prevention (CDC) and World Health
Organization (WHO) recommends healthcare workers using an alcohol-based
hand sanitizer to disinfect hands. Using 60-95% alcohol (by weight) rub
or
gel has the highest efficacy rate in killing a broad range of
microorganisms.
So hand sanitizers have their place. People have been sanitizing for
millennia with soap, i.e. potassium and sodium salts of fatty acids,
without soap becoming less effective at removing germs, Additionally,
ethanol has been used for sanitizing for well over a century without
losing
its basic effectiveness.
However, my mother washed my baby brother every day with Phisohex when
he
was an infant, when it would have been much better to use a mild,
super-fatted soap. She did this because she had an exaggerated fear of
germs. This did not prevent him from pulling a piece of chewing gum out
of
the sandbox in a public park, which resulted in the whole family having
dysentery.
Karen Tellefsen - Electrical Testing
[log in to unmask]
908-791-3069
Brian Ellis
<[log in to unmask]
OM>
To
Sent by: TechNet [log in to unmask]
<[log in to unmask]>
cc
Subject
04/28/2009 01:22 Re: [TN] Hand Sanitizer and PCB
AM Assembly
Please respond to
TechNet E-Mail
Forum
<[log in to unmask]>
; Please respond
to
Brian Ellis
<[log in to unmask]
OM>
Not surprising! And it has to be hot to ensure pores are opened.
Surgeons have known empirically for >100 years that scrubbing takes 10
minutes.
Brian
Joe Russeau wrote:
> Well to add some additional information to this subject matter. In
> college I took a majors level microbiology class. This was about the
> time that all of these hand sanitizers were becoming popular. In one
> experiment, our goal was to determine the effectiveness of these
> sanitizers to kill the various microorganisms indigenous to humans.
> Everyone started with a baseline of their uncleaned hands to establish
> each individual's flora. We all have different bugs on our skin, sort
> of like fingerprints if you will.. We used a wide variety of growing
> media from different agar plates to broths to grow all the various
> bugs. Then we washed hands for different times using the various hand
> sanitizers. We re-plated after each cleaning period and each
> sanitizer. Also, this was not done all at once, but over several lab
> periods. Surprisingly, the results showed that a quick wash (less
than
> one minute) with these materials was ineffective in reducing the
various
> germs. Washing hands longer than five minutes was required to have any
> significant effect.
>
> The sanitizers used today may be somewhat better than nothing, but my
> concern is that the more these are used, the less resistant some of
> these bugs will become. Keep in mind that not all bugs are harmed by
> short exposures to these materials, as they have very good defense
> mechanisms. So if their not killed with short exposures, that helps
> them gain resistance as their DNA evolves very quickly. In addition,
as
> humans, we may be doing ourselves a disservice by lowering our own
> natural resistance and defense to these critters. My microbiology
> professor said he believed that the next dominant species on Earth
would
> be microorganisms because of our practices with the various sanitary
> cleaners and antibiotic drugs.
>
> Joe Russeau
>
>
>
> ----- Original Message ----- From: "Ken Bloomquist"
> <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Monday, April 27, 2009 11:14 AM
> Subject: Re: [TN] Hand Sanitizer and PCB Assembly
>
>
>> Hi Karen,
>>
>> You wrote: "I've always found hand sanitizer superfluous, just
washing
>> ones
>> hands with soap and water kills most germs."
>>
>> I agree that in the work environment you are probably correct but I
think
>> that hand sanitizers with at least 60% alcohol are good when you are
>> out in
>> public and can't readily wash your hands. I usually keep a small
>> bottle in
>> my car and an even smaller one in my pocket.
>>
>> KennyB
>> -----Original Message-----
>> From: Karen Tellefsen [mailto:[log in to unmask]]
>> Sent: Monday, April 27, 2009 6:43 AM
>> To: [log in to unmask]
>> Subject: Re: [TN] Hand Sanitizer and PCB Assembly
>>
>> Purell:
>>
>> Ingredients:
>> Active Ingredients: Contains: Ethyl Alcohol (62%)
>>
>> Inactive Ingredients: Water, Glycerin, Isopropyl Myristate, Propylene
>> Glycol, Tocopheryl Acetate, Aminomethyl Propanol, Carbomer, Fragrance
>> (parfum)
>>
>>
>> The glycerin and propylene glycol would concern me, they're both
>> hydrophillic. The ethanol in the active ingredient, maybe a mixture
of
>> 60% ethanol 35% water 5% isopropanol ( to make it undrinkable, but
safe
>> enough for topical use) would be better around circuit boards. It
would
>> tend to dry the users' hands, but would not help to contaminate
circuit
>> boards.
>>
>> I've always found hand sanitizer superfluous, just washing ones hands
>> with
>> soap and water kills most germs.
>>
>>
>> Karen Tellefsen - Electrical Testing
>> [log in to unmask]
>> 908-791-3069
>>
>>
>>
>> ---------------------------------------------------
>> Technet Mail List provided as a service by IPC using LISTSERV 15.0
>> To unsubscribe, send a message to [log in to unmask] with following
text
in
>> the BODY (NOT the subject field): SIGNOFF Technet
>> To temporarily halt or (re-start) delivery of Technet send e-mail to
>> [log in to unmask]: SET Technet NOMAIL or (MAIL)
>> To receive ONE mailing per day of all the posts: send e-mail to
>> [log in to unmask]: SET Technet Digest
>> Search the archives of previous posts at:
>> http://listserv.ipc.org/archives
>> Please visit IPC web site
>> http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional
>> information, or contact Keach Sasamori at [log in to unmask] or
>> 847-615-7100 ext.2815
>> -----------------------------------------------------
>>
>
> ---------------------------------------------------
> Technet Mail List provided as a service by IPC using LISTSERV 15.0
> To unsubscribe, send a message to [log in to unmask] with following text
in
> the BODY (NOT the subject field): SIGNOFF Technet
> To temporarily halt or (re-start) delivery of Technet send e-mail to
> [log in to unmask]: SET Technet NOMAIL or (MAIL)
> To receive ONE mailing per day of all the posts: send e-mail to
> [log in to unmask]: SET Technet Digest
> Search the archives of previous posts at:
http://listserv.ipc.org/archives
> Please visit IPC web site
> http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional
> information, or contact Keach Sasamori at [log in to unmask] or
847-615-7100
> ext.2815
> -----------------------------------------------------
>
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text
in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to
[log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to
[log in to unmask]: SET Technet Digest
Search the archives of previous posts at:
http://listserv.ipc.org/archives
Please visit IPC web site
http://www.ipc.org/contentpage.asp?Pageid=4.3.16
for additional information, or contact Keach Sasamori at [log in to unmask]
or
847-615-7100 ext.2815
-----------------------------------------------------
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text
in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to
[log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to
[log in to unmask]: SET Technet Digest
Search the archives of previous posts at:
http://listserv.ipc.org/archives
Please visit IPC web site
http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100
ext.2815
-----------------------------------------------------
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------
|
