Re: Black anti-static foam corrosion

2016-12-05 Thread Tothwolf
On Sat, 3 Dec 2016, Fred Cisin wrote: On Sat, 3 Dec 2016, drlegendre . wrote: Interesting find, thanks for posting this. I've seen this as well. with a batch of old ICs which had been stored (in black foam) for some 20-30 years. The leads kind of just stayed behind in the foam.. My assumption

Re: Black anti-static foam corrosion

2016-12-04 Thread Fred Cisin
(Three other cases had simply disappeared between the time my buddy died and the time that the county let us go through the house.) On Sun, 4 Dec 2016, Stefan Skoglund (lokal anv�ndare) wrote: The lenses, were they stolen after his death until the county sheriff released his house ? Yes. But t

Re: Black anti-static foam corrosion

2016-12-04 Thread Stefan Skoglund (lokal
lör 2016-12-03 klockan 19:46 -0800 skrev Fred Cisin: > > > (Three other cases had simply disappeared between the time my buddy > > > died and the time that the county let us go through the house.) > > On Sat, 3 Dec 2016, couryho...@aol.com wrote: > > let me know if you have a 90 mm summacron f2

Re: Black anti-static foam corrosion

2016-12-03 Thread COURYHOUSE
a loss indeed... Well we have the M2 body and light meter to go on top. All we just need the lens so if you ever find another please let us know! Thanks ! Ed# In a message dated 12/3/2016 8:46:15 P.M. US Mountain Standard Time, ci...@xenosoft.com writes: > > (Three other cases had s

Re: Black anti-static foam corrosion

2016-12-03 Thread Fred Cisin
> (Three other cases had simply disappeared between the time my buddy > died and the time that the county let us go through the house.) On Sat, 3 Dec 2016, couryho...@aol.com wrote: let me know if you have a 90 mm summacron f2(?) a nice working one is great! I not good inside but looks

Re: Black anti-static foam corrosion

2016-12-03 Thread COURYHOUSE
let me know if you have a 90 mm summacron f2(?) a nice working one is great! I not good inside but looks ok on the outside let me know... we need it to go on an M2 in a display. Ed# _www.smecc.org_ (http://www.smecc.org) In a message dated 12/3/2016 8:24:48 P.M. US Mountain S

Re: Black anti-static foam corrosion

2016-12-03 Thread Fred Cisin
On Sat, 3 Dec 2016, drlegendre . wrote: Interesting find, thanks for posting this. I've seen this as well. with a batch of old ICs which had been stored (in black foam) for some 20-30 years. The leads kind of just stayed behind in the foam.. My assumption was that the foam was simply hygroscopic,

Re: Black anti-static foam corrosion

2016-12-03 Thread drlegendre .
Interesting find, thanks for posting this. I've seen this as well. with a batch of old ICs which had been stored (in black foam) for some 20-30 years. The leads kind of just stayed behind in the foam.. My assumption was that the foam was simply hygroscopic, and held enough atmospheric moisture & p

Black anti-static foam corrosion

2016-12-03 Thread Al Kossow
I was curious what the compound is that corrodes IC leads in old black anti-static foam adipic acid https://www.febo.com/pipermail/time-nuts/2008-July/032531.html and google for polyurethane and adipic acid https://www.jstor.org/stable/20619421 Corrosion on Metallic Tokens Stored in Polyureth