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May 2001

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Subject:
From:
Ken Mc Gowan <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Fri, 25 May 2001 14:58:31 -0100
Content-Type:
text/plain
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text/plain (185 lines)
Hi Bev,

Equilibrium arrows can be found with insert, symbol,Monotype
sorts1,choose,insert.

Best Regards,

Ken McGowan
----- Original Message -----
From: "Bev Christian" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, May 25, 2001 10:32 AM
Subject: Re: [TN] Permanent Moisture Sensitivity Indicators?


> Pete,
> "Pure" water has a pH closer to 5.6, because of
> CO2(g) + H2O(aq) -> CO2(aq) + H2O(aq) -> H2CO3(aq)
>
> This is an equilibrium reaction, but I can't take the time to figure out
how
> to get the symbol for opposing arrows.  But I doubt that this is enough of
a
> change to trigger litmus paper, it (litmus paper) is not very sensitive.
> Some of the other more sensitive pH strips might show a change, but I
> specifically am looking for something that will change with liquid water
and
> not high humidity as well.  Thanks.
>
> Bev
>
> -----Original Message-----
> From: <Peter George Duncan> [mailto:[log in to unmask]]
> Sent: May 24, 2001 10:52 PM
> To: [log in to unmask]
> Subject: Re: [TN] Permanent Moisture Sensitivity Indicators?
>
>
> I thought litmus paper would only get wet in water, and get dry again once
> exposure ended - it wouldn't change colour because water (pure H2O anyway)
> is pH-neutral.
>
> Pete Duncan
>
>
>
>
>
>                     "Blomberg, Rainer
>                     (FL51)"                      To:     [log in to unmask]
>                     <rainer.blomberg@HONE        cc:     (bcc: DUNCAN
> Peter/Asst Prin Engr/ST Aero/ST Group)
>                     YWELL.COM>                   Subject:     Re: [TN]
> Permanent Moisture Sensitivity
>                     Sent by: TechNet             Indicators?
>                     <[log in to unmask]>
>
>
>                     05/24/01 08:45 PM
>                     Please respond to
>                     "TechNet E-Mail
>                     Forum."; Please
>                     respond to "Blomberg,
>                     Rainer (FL51)"
>
>
>
>
>
>
> How about something like Litmus paper?  I like the dissolving/stain
> solution.
>
> R. G. Blomberg
> Honeywell - Space Systems
>
>
>
>
> -----Original Message-----
> From: Bev Christian [mailto:[log in to unmask]]
> Sent: Wednesday, May 23, 2001 6:29 PM
> To: [log in to unmask]
> Subject: [TN] Permanent Moisture Sensitivity Indicators?
>
>
> TechNetters,
> Hann asked this same sort of question May 9th and I am not aware of any
> answers being posted.  Certainly not with the same title (searched
> archives).
>
> Ever have clients dunk your hard work in water and then claim that you
> couldn't make good product?  Do any of you know of any really small,
> moisture indicator strips that permanently changed color when they are
> dunked in liquid water, as opposed to just being exposed to high humidity
> for long periods of time?  I know, I know a tall order.  Any help would be
> appreciated.  Thanks.
>
> Bev Christian
> Research in Motion
>
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