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February 2012

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Subject:
From:
Inge Hernefjord <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Inge Hernefjord <[log in to unmask]>
Date:
Sun, 5 Feb 2012 08:33:38 +0100
Content-Type:
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Is 99% USP IPA what most folks use?

No. I use 44% Talisker

Inge

On 5 February 2012 02:40, Phil Bavaro <[log in to unmask]> wrote:

> 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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