quote:I use full strength white vinegar.........
Full immersion for as long as it takes and then into the dishwasher on a cold rinse until I can't smell it. Dry with ethanol and then warm air...
I have 2-3 times on really ugly stuff done a full immersion in 3-6M HCl (not recommended for those w/o proper facilities) for 5-10 min and then rinsed as above.....