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Unread 04-24-2003, 05:29 PM   #3
Alchemy
Cooling Savant
 
Join Date: Oct 2002
Location: Boston
Posts: 238
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The dye will fluoresce whether it is in solution or adsorbed onto the tubing.

My guess is that the dye is being broken down by some other additive, though it's impossible to give even an educated guess with only a single anecdote to go on.

Alchemy
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