[Amps] DI water explainationTSPA

[Paul Christensen]

> "You don't use DI water with steel or iron piping.
Use stainless steel, brass, copper, or plastics."

One point of interest with the Alpha 70V is that copper appears to be the 
only metal that comes in contact with water.  The condenser is of a special 
design that uses soft rosin-core solder, rather than the acid-core type that 
is often used when bonding auto radiators.   I haven't had a good look to 
determine if solder is also directly exposed to water.

I will need to dig up the article, but I believe this was discussed by Jack 
Quinn, author of "The Stanley Steamer," back in the May, 1966 issue of QST. 
At the time, I believe Jack was Eimac's Product Manager.  In the article, he 
went on to explain that even brass tubing and fittings can add to water 
contamination over long periods of time.

I almost forgot that this topic was covered by Dick Ehrhorn here on the AMPS 
reflector nearly a decade ago.  Here's his insight on vapor cooling and he 
even credits John Lyles in the middle:

http://lists.contesting.com/_amps/1998-08/msg00030.html

Paul, W9AC