Sperm Processing

To achieve the best possible outcomes, sperm processing should include different techniques that are best suited for the variability of semen samples. Several processes are available to address the diversity amongst sperm quality differences. Sperm preservation has also become a common practice in modern day assisted reproduction.

Density gradient separation is one of the most common sperm preparation techniques, where concentrated sperm with the best motility are separated from other debris (poor or non-motile sperm, white blood cells, etc.) by using a colloidal solution of different densities.


Sperm washing is a technique used to remove sperm from the semen. This process uses media that provides a buffered environment that is able to support sperm motility and vitality which is required for successful fertilization.


Sperm freezing has become a routine process that depends greatly on the survivability and usability of the sperm after the preservation and thawing process. Sperm cryopreservation media protects sperm from the damaging effects of ice-crystal formation during the freezing process and subsequent long-term storage.


The special design and mode of filling and sealing of the CBS™ High Security straws for cryopreservation of human biological samples makes the straws fully hermetic in ultra-low temperatures. Manufactured from biocompatible materials, the straws are used in medically-assisted procreation techniques, particularly for human gamete and embryo preservation.