Stop the cross-linking by adding glycine to a final concentration ... Load the samples on a 1% agarose gel. You should see a smear with a peak of intensity between 500 bp and 1 kb.

In this form of pulsed-field gel electrophoresis (transverse alternating ... by ultraviolet-light cross-linking or by heating for 2–3 min at full power in a microwave oven (750–900 W).