These tests are designed to verify that the product is microbe and virus-free. These tests also assure that the product's shelf-life is not compromised by its packaging. The standards employed are the EN550, EN552, and EN554. The four most frequently used sterilization techniques are:

• Sterilization using Gamma rays
  Gamma rays disrupt chemical bonds and disrupt the reproductive capability of viruses and bacteria.
  
  
• Sterilization using Ethylene Oxide
  This process is used on products that disintegrate with radiation. It is a lengthy and toxic process. When completed, specific verification tests must be performed to assure that no poisonous molecules remain on the product.
  
  
• Heat sterilization
  Bacteria and viruses are destroyed in high temperatures exceeding 120°C.
  
  
• Sterilization using Sidex
  This is one of the less popular techniques, used for very delicate instruments (such as endoscopic cameras) that may be damaged by other sterilization methods.

The choice of the proper sterilization process will depend on the materials your product is composed of.