EVD (blue cap) is used by many stallion owners during and after the centrifuge procedure for shipped semen. Many foals have been produced with the help of this extender. The sperm of many stallions remains very well preserved for a long period of time. Semen cells are easily visible under the microscope in this extender. EVD is also suitable for semen centrifugation before the freezing procedure. This extender contains a formula of antibiotics that is hard but effective against bacteria and is in addition gentle on the sperm. Sent out deeply frozen to the customer. SEE SPERVITAL DELIVERY BOX.