Laboratory exercises - (Jan/03/2011 )

Hi!
Does anyone know a good website with exercises + answers on laboratory calculations etc.?

E.g. exercises on

- dilution calculations
- restriction analasys
- PCR primer usage

It'll be nice if someone posts me a link or gives me a good literature tip!

Best regards,
Ikar

http://www.promega.com/biomath/Default.htm

this is one i used looong time back!!!

Ah, thanks for this useful tool!