Pushing my response off topic for sure...

I've seen you! You're the guy with the bathtub on his front lawn
and a sign that says "Make your wishes come true! (banknotes only)"
next to the tub.  Good move mate, good move! <wink>

Gustaf

> -----Original Message-----
> From: pic microcontroller discussion list
> [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Jim Franklin
> Sent: Monday, March 01, 2004 9:11 PM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [EE:] Copper Toxicology - was .. My first PCB production
>
>
> To make things worse -
>
> the habit of dropping money into wishing wells....
>
> for example, the English penny, metal content, 95% Copper, 4%
> Tin, 1% Zinc,
> it doesn't take many of these to get a kg of copper...
>
> so next time you want to be mean with your wishes, drop something with a
> lower copper content, and a higher denomination.
>
> For those of you wanting to know where there is an eco friendly higher
> denomination only, (including banknotes) wishing well, contact me for my
> address :-)
>
> Jim
>
>
>
>
>
> ----------------------
>  www.jimfranklin.info
>
> PIC Micro Application website
> -----------------------------
>
> -----Original Message-----
> From: pic microcontroller discussion list
> [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Jinx
> Sent: 02 March 2004 02:00
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [EE:] My first PCB production
>
>
> > What is "contamination" though, 1ppm? 20ppm?
>
> According to some toxicology reports on the web, 5ug/l of copper
> chloride is the lower limit for aquatic life. Not much is it ?
>
> IOW 180,000,000 litres per kg or 21,000,000 US gallons / lb
>
> A cube with 56.4m (181ft) sides
>
> That's why I don't tip it down the sink
>
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