i cut up my ebay still so that i can use the 50mm copper pipe, i knew it had been soldered with lead solder and builder claims that it will not harm any one.this is what i found.
you be the judge about not harming any on. a lot of these were sold so if any one has one like me get macstill to build you a new one or get it re soldered with silver solder.
there is a lot of people on this site that can give you more info than me.
i hope this is of help to any one that was like me silly enough to buy one.