Hello,

Unfortunately, no one knows a 'magic' formula to clean completely a shell...
Each group or species must be treated in a different way, and every
collector has his own preferred tecnique.
I try to show people the way we clean shells in our office and you can see
it here

http://www.femorale.com.br/shell_cleaning/default.htm

Of course these are not rules to be followed 100% and some may not agree
with my methods.
If anyone finds out a perfect way to clean, or a 'magic' potion, I am the
first one on the line to buy it!

Marcus


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