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Reagent grade
----- Original Message -----
From: Robert Kondner [mailto:[log in to unmask]]
Sent: Saturday, February 04, 2012 04:24 PM
To: [log in to unmask] <[log in to unmask]>
Subject: [TN] Is 99% USP IPA what most folks use?
Hi,
I was reading through the Ellis book on cleaning and I noticed adding IPA to
water reduces surface tension.
Neat, I figure that is a simple way to improve a rinse. I was planning on
final rinse with distilled water so I don't need to bother with blow off as
much.
Just for fun I looked into various grades and it looks like dissolved
materials is about .005% or 39mg / Liter. (1 L = 780gram)
Hmmmm, That sounds rather high compared to distilled water. I mean Lake
Michigan is 170 mg/L I think.
(See:
http://www.aquapurefilters.com/contaminants/163/total-dissolved-solids.html)
No one would think twice about dipping a cleaning swap into IPA to clean a
board. But Lake Michigan water? Holy Cow!
Did I find the wrong specs on the IPA?
Bob K.
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