The present invention relates to a method for preserving biological material comprising the steps of: providing a vitrification solution comprised of the biological material and a vitrification agent where the solution has a temperature in the range from 0.1° C. to 17.9° C. microwaving the vitrification solution for a first period of time allowing the vitrification solution to rest for a second period of time repeating steps b and c until the vitrification solution enters into a glassy state.
