The SAS (Sterile Access System): ensuring integrity in cleanrooms

Published JULY 2023  -  CLEANROOMS

Blog > News > The SAS (Sterile Access System): ensuring integrity in cleanrooms

Cleanrooms play a critical role in a wide range of industries, from pharmaceutical manufacturing to semiconductor technology. These controlled environments are designed to ensure maximum cleanliness and sterility, which is essential to protect sensitive products and processes from contamination.

The SAS system, also known as the Sterile Access System, is a set of protocols and devices designed to ensure the safe transfer of materials and people into and out of cleanrooms. It is specifically designed to minimize contamination and maintain cleanroom integrity during access. It is a vital component of cleanrooms that plays a crucial role in maintaining the integrity and purity of these highly controlled environments. As a result, the quality and reliability of products and processes manufactured in these critical facilities is assured for a wide range of industries.

SAS system components and characteristics:

  • Access doors:

    The SAS system uses specialized access doors that are designed to minimize particulate entry and maintain unidirectional airflow in the cleanroom. These doors are usually automatic and are equipped with tight closing mechanisms to prevent the entry of external particulates.

  • Air chambers:

    Air chambers are intermediate devices that are located between the external access area and the cleanroom environment. They allow people or materials to be isolated from outside air and undergo a cleaning process before entering the cleanroom. Air chambers may include air filtration systems and particulate sprayers to ensure an optimal level of cleanliness.

  • Control and monitoring systems:

    The SAS system is equipped with control and monitoring technology that ensures compliance with established protocols. These systems may include ID card readers, security cameras, differential pressure sensors and access management systems to track and control the movement of people and materials in the cleanroom.

Benefits and advantages of the SAS system:

  • Contamination prevention:

    The SAS system is designed to minimize the entry of particulates and contaminating organisms into cleanrooms, ensuring the integrity of sensitive products and processes.

  • Regulatory compliance:

    Cleanrooms, especially in the pharmaceutical and medical device industries, must comply with strict regulations and standards. The SAS system helps meet these requirements by providing tight control of access and material transfer.

  • Personnel security:

    By controlling and tracking access to cleanrooms, the SAS system helps ensure personnel safety by preventing unauthorized entry and maintaining records of who accesses the cleanroom at all times.


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