Dna after gel extraction, single or double stranded? - (Jun/08/2011 )

Hi

If you run your PCR-product in an agarose gel and then extract your DNA from the gel, is the DNA after that in single or double stranded form. I want to measure the concentration in a gel so I want to know which settings I use.

Or is there a better way to measure the concentration?

Thanks a lot!

double