Dye to colour DNA samples for PCR

[Ciaran Meghen]

Does anyone know of a biologically inert dye for colouring DNA samples used
in PCR ?  I have tried using a 1:1500 dilution of the food colouring
'Brilliant Blue' but this has drastically reduced PCR yields.  Suggestions
very welcome. 

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Ciaran Meghen,           E-mail: cmeghen at mail.tcd.ie
Genetics Department,     Phone:  (353)-1-7021265
Trinity College,         Fax:    (353)-1-6798558
Dublin 2.
Ireland.
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