Sperm banks select their donors after a detailed screening process to ensure the quality and safety of the sperm. Factors such as medical and genetic history, specific characteristics like intelligence and emotional quotient, and physical features like height and weight are all considered. n2. Although the most common means of obtaining the sample is masturbation, sperm banks may collect sperm through surgical procedures.n3. Sperm specialists prepare the collected sperm by separating them from the seminal fluid. It ensures that only the healthy sperms with the adequate count, mobility, and form are stored.n4. Sperm banks store these samples using liquid nitrogen to maintain a temperature of -196 °C.n5. This extreme cold storage allows the sperm to be stored indefinitely.n6. The samples are stored in different tanks to avoid mishaps should any tank experience any failure.n7. When the sperm sample is ready for use, it undergoes a thawing process to get it to room temperature.n8. About half to one-third of the sperms remain following the freezing-thawing session.n9. Sperm banks are expensive as they charge for the testing, collecting, freezing, persistent storage, and thawing.n10. Sperm banks reimburse their donors financially and protect them via legal contracts. The donors are exempt from any responsibilities of the children conceived through their donation and have no right over them.