We have found a distinct advantage to using SYBR® Safe DNA gel stain and non-UV blue light rather than ethidium bromide and UV when purifying DNA from gels for downstream use. The use of SYBR® Safe DNA gel stain with non-UV blue light emitted by Invitrogen’s Safe Imager™ instrument allows you to purify DNA with virtually no UV-induced nicking or crosslinking, resulting in dramatically increased cloning efficiencies.