Thanks guys...BUT, I am not trying to convince UL that I am correct. This is
all internal to the company I am working with.
Just to give you an idea of how confusing this issue is, I have privately
received responses stating that all the following are acceptable:
Kerosene
Isopropyl alcohol
Rubbing Alcahol
Lamp Oil
Hexane
Now I am not a chemical expert, but the chemical properties of these
chemicals are not similar to one another (the simplest comparison is the
boiling point, the above range from 60C - 300C).
Calling UL and asking them what they use is easy...the hard part is proving
that whatever the subject chemical is, it complies with the standard. Just
wondering if anyone has had this experience before.
From: Gary McInturff <gary.mcintu...@worldwidepackets.com>
To: "'oover...@lexmark.com'" <oover...@lexmark.com>,
kmccormick...@hotmail.com
CC: emc-p...@ieee.org
Subject: RE: Seeking assistance from Chemical Experts
Date: Tue, 2 Jan 2001 12:24:17 -0800
Not only cheap, but sometimes it is much easier just to do it their way
than
argue with them that you material should or should not be acceptable. Pick
your battles. Let them win this one.
Gary
-----Original Message-----
From: oover...@lexmark.com [mailto:oover...@lexmark.com]
Sent: Tuesday, January 02, 2001 10:46 AM
To: kmccormick...@hotmail.com
Cc: emc-p...@ieee.org
Subject: Re: Seeking assistance from Chemical Experts
From the UL Test Data Sheets provided to me by my UL engineering office,
the
material listed in the text of the test data sheet is kerosene.
I don't know what the actual physical characteristics are, but if UL uses
this
for their test I would assume that it is acceptable for me to use.
Kerosene is an easy product to obtain and is not that expensive.
I have included an excerpt of the UL 1950 test data sheet that I was given
by
UL.
Oscar
##### Excerpt from the UL 1950 Test Data Sheets #####
1.7.15 - PERMANENCE OF MARKING TEST:
METHOD
A sample of the marking label was subjected to this test. The
surface
of
each marking as noted below was rubbed by hand for a period of 15 seconds
with a
water soaked cloth, and again for a period of 15 seconds with a cloth
soaked
with the petroleum spirit noted below.
RESULTS
TEST CONDITIONS:
Use of Marking _____________ ____________
Material _____________ ____________
Held by _____________ ____________
Applied Surface Material _____________ ____________
OBSERVATIONS:
Water Kerosene
Any Damage? _________ _________
Legible? _________ _________
Curled? _________ _________
Edge Lifted? _________ _________
Easily Removed Intact? _________ _________
The marking was/was not durable and legible.
Comments:___________________________________________
_____________________________________________________
Document: 060.Eng
##### End of Excerpt from UL 1950 #####
kmccormickinc%hotmail....@interlock.lexmark.com on 01/02/2001 01:12:36 PM
Please respond to kmccormickinc%hotmail....@interlock.lexmark.com
To: emc-pstc%ieee....@interlock.lexmark.com
cc: (bcc: Oscar Overton/Lex/Lexmark)
Subject: Seeking assistance from Chemical Experts
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