I've always found it amusing that it changes within the chapter of the
standard. It's been there a long time so we can only assume that two
different groups pulled the information together and that it was not
coordinated since it was not considered a significant issue (sounds
better than wasn't noticed and then after its published no one was
squawking so no need to change it). The difference for PG is not very
great but glycerin is a different story.
Roland
On Aug 18, 2010, at 3:22 PM, Thom wrote:
I find it interesting that NFPA uses 50% by Volume in the TIA yet
uses 50%
by weight in the Handbooks and temp charts for GL.
Any idea why this change in how it's measured?
Thom
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