May it is the high amount of ionizing radiation that is causing it to go yellow. He might try putting it into a lighttight lead box for storage.
Marshall Paul Holloway wrote: > Hello List, I have a friend who lives at 8000 feet altitude.He is > having problems making CS that doesn't go yellow.His water quality is > good, as is his technique, from what he describes (cold DW 30v limited > to <1mA with stirrer or bubbler).He has concluded that the high > altitude is the problem.I can't see how that would stop him from > making good quality CS.Any ideas? Paul H