Agarose gel

[Bertrand Collet]

Dear all,

Some people in the lab I work have some problems with the quality of
their EtBr-Agarose gel. The top part seems completely saturated with
EtBr and give a glow making image analysis very difficult.
Is there too much EtBr ? Or another explanation ?
It looks like it is very common problem but I never had an explanation
of it,

Thanks in advance for your time,

Bertrand Collet