Abstract: The invention relates to a method for vitrifying a biological sample. The method includes positioning a sample holder with the biological sample by a transfer device in a starting position. The sample holder has a base and a pin projecting from the base along a holder axis. Further, the biological sample is attached to the pin distant from the base. The method further comprises adding a liquid to the biological sample in the starting position by a liquid dispenser. Further, the method comprises moving the sample holder with the biological sample by the transfer device along a predetermined transfer path from the starting position to a release position, wherein the biological sample in the release position is arranged in or adjacent to a liquefied gas. It is provided that the transfer path is inclined with respect to the holder axis or runs along a circular arc. Furthermore, the invention relates to a vitrification apparatus which is configured to perform the method.

Abstract: A method for synchronizing a light grid comprising a transmitting unit having a plurality of transmitters and a receiving unit having a plurality of receivers. A transmitter control unit activates the transmitters one after another in a cycle, and a receiver control unit evaluates the receivers. Each transmitter is associated with a receiver, and an activated transmitter transmits a transmission beam to its associated receiver. At least two transmission beams in the cycle are synchronization transmission beams which are emitted at a time offset from one another. The receiver control unit measures the time offset, and the synchronization transmission beams are uniquely associated with the totality of the transmission beams in the cycle on the basis of the time offset.

Abstract: A method for synchronizing a light grid comprising a transmitting unit having a plurality of transmitters and a receiving unit having a plurality of receivers. A transmitter control unit activates the transmitters one after another in a cycle, and a receiver control unit evaluates the receivers. Each transmitter is associated with a receiver, and an activated transmitter transmits a transmission beam to its associated receiver. At least two transmission beams in the cycle are synchronization transmission beams which are emitted at a time offset from one another. The receiver control unit measures the time offset, and the synchronization transmission beams are uniquely associated with the totality of the transmission beams in the cycle on the basis of the time offset.