THis test was performed by our customer WITH WATER FROM THE TAP.
I want to explain to our customer what is happening , why it is getting dark
?Thaks for your help.
Michel



> -----Original Message-----
> From: Ahne Oosterhof [SMTP:[log in to unmask]]
> Sent: Wednesday, January 14, 2004 1:57 PM
> To:   [log in to unmask]
> Subject:      Re: [TN] Battery contamination ???
>
> Quite often water labeled as deionized water is more like softened water.
> The ions are not removed, just combined with other stuff. It is probably
> more desirable for this test to use distilled or double-distilled water to
> really make sure you have H2O only.
>
> But what are you trying to learn from this test?
>
> Regards,
> Ahne Oosterhof
> 503-641-9428
> [log in to unmask]
>
>
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]]On Behalf Of Arbour, Michel
> Sent: Wednesday, January 14, 2004 09:55
> To: [log in to unmask]
> Subject: [TN] Battery contamination ???
>
>
> Hello technet,
> One of our customer reported a problem with a lot of battery but we are
> confused as how to interpret the results.
> The battery if a full metal casing with the negative lead spot welded to
> the
> casing while the pos. lead connects inside.The visual aspect of the leads
> are excellent.
> The test consists to dip the component in a stainless steel ultrasonic
> bath
> containing de-ionized water at 70C. The part is lying on a nylon net.
> The positive lead of the battery gets darkened after 5 minutes in this
> bath.
> Only the positive pin gets dark (oxydized)
>
> Are we in the presence of an electrolytic reaction??
> Is it contamination of the positive lead that cause this reaction ?
> Any other test to suggest ?
>
> Regards
> MIchel Arbour
>
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