Posted in

What is the difference between a Clean Bench and a biosafety cabinet?

by william•

In the realm of laboratory equipment, clean benches and biosafety cabinets are two commonly used tools, each with its own unique functions and applications. As a supplier of clean benches, I often encounter customers who are confused about the differences between these two pieces of equipment. In this blog post, I will delve into the distinctions between clean benches and biosafety cabinets to help you make an informed decision when choosing the right equipment for your laboratory needs. Clean Bench

Understanding Clean Benches

A clean bench, also known as a laminar flow cabinet, is designed to provide a clean working environment by directing a uniform flow of filtered air over the work surface. The primary purpose of a clean bench is to protect the sample or product being worked on from contamination by airborne particles. This is achieved through the use of high-efficiency particulate air (HEPA) filters, which remove particles as small as 0.3 microns with an efficiency of 99.97%.

There are two main types of clean benches: horizontal and vertical. Horizontal clean benches blow air horizontally across the work surface, while vertical clean benches blow air vertically downwards. The choice between horizontal and vertical clean benches depends on the specific application and the type of work being performed. For example, horizontal clean benches are often used for tasks that require a large working area, such as electronics assembly or pharmaceutical compounding. Vertical clean benches, on the other hand, are more suitable for applications that require a higher level of protection, such as cell culture or microbiological work.

One of the key advantages of clean benches is their simplicity and ease of use. They are relatively inexpensive compared to biosafety cabinets and require less maintenance. Clean benches are also ideal for applications where the risk of biological contamination is low, such as in research laboratories or manufacturing facilities.

Understanding Biosafety Cabinets

A biosafety cabinet, on the other hand, is designed to protect both the operator and the environment from biological hazards. Biosafety cabinets are used in a variety of settings, including research laboratories, clinical laboratories, and pharmaceutical manufacturing facilities. They are classified into three types based on their level of protection: Class I, Class II, and Class III.

Class I biosafety cabinets provide personnel and environmental protection by drawing air into the cabinet through a HEPA filter. The filtered air is then exhausted outside the building. Class I biosafety cabinets are suitable for working with low to moderate risk biological agents, such as non-infectious bacteria and viruses.

Class II biosafety cabinets provide both personnel and product protection. They are further divided into four types: A1, A2, B1, and B2. Class II Type A1 and A2 cabinets recirculate a portion of the filtered air back into the cabinet, while the remaining air is exhausted outside the building. Class II Type B1 and B2 cabinets exhaust all the filtered air outside the building. Class II biosafety cabinets are suitable for working with moderate to high risk biological agents, such as infectious bacteria and viruses.

Class III biosafety cabinets provide the highest level of protection. They are completely enclosed and operate under negative pressure, which prevents the escape of biological agents. Class III biosafety cabinets are used for working with the most dangerous biological agents, such as Ebola virus and anthrax.

Key Differences between Clean Benches and Biosafety Cabinets

Now that we have a basic understanding of clean benches and biosafety cabinets, let’s take a closer look at the key differences between the two:

  1. Purpose: The primary purpose of a clean bench is to protect the sample or product being worked on from contamination by airborne particles. Biosafety cabinets, on the other hand, are designed to protect both the operator and the environment from biological hazards.
  2. Airflow: Clean benches use a laminar flow of filtered air to create a clean working environment. Biosafety cabinets use a combination of laminar flow and negative pressure to prevent the escape of biological agents.
  3. Level of Protection: Clean benches provide a high level of protection against particulate contamination but do not offer protection against biological hazards. Biosafety cabinets provide varying levels of protection against biological hazards, depending on the class of the cabinet.
  4. Cost: Clean benches are generally less expensive than biosafety cabinets. They also require less maintenance and have lower operating costs.
  5. Applications: Clean benches are suitable for applications where the risk of biological contamination is low, such as in research laboratories or manufacturing facilities. Biosafety cabinets are used in applications where the risk of biological contamination is high, such as in clinical laboratories or pharmaceutical manufacturing facilities.

Choosing the Right Equipment for Your Laboratory

When choosing between a clean bench and a biosafety cabinet, it is important to consider the specific needs of your laboratory. Here are some factors to consider:

  1. Type of Work: Consider the type of work you will be performing in the laboratory. If you are working with non-infectious materials, a clean bench may be sufficient. If you are working with biological agents, a biosafety cabinet is required.
  2. Level of Protection: Determine the level of protection required for your work. If you are working with low to moderate risk biological agents, a Class I or Class II biosafety cabinet may be suitable. If you are working with high risk biological agents, a Class III biosafety cabinet is required.
  3. Budget: Consider your budget when choosing between a clean bench and a biosafety cabinet. Clean benches are generally less expensive than biosafety cabinets, but they may not provide the level of protection required for your work.
  4. Space Requirements: Consider the space available in your laboratory. Clean benches are generally smaller and require less space than biosafety cabinets.

Conclusion

In conclusion, clean benches and biosafety cabinets are two important pieces of laboratory equipment, each with its own unique functions and applications. As a supplier of clean benches, I understand the importance of choosing the right equipment for your laboratory needs. By understanding the differences between clean benches and biosafety cabinets, you can make an informed decision and ensure the safety and integrity of your work.

Clean Bench If you are interested in learning more about clean benches or need help choosing the right equipment for your laboratory, please contact us. Our team of experts is available to answer your questions and provide you with the information you need to make an informed decision.

References

  1. American National Standards Institute (ANSI). (2019). American National Standard for Laboratory Ventilation. ANSI/ASHRAE 110-2019.
  2. Centers for Disease Control and Prevention (CDC). (2020). Biosafety in Microbiological and Biomedical Laboratories (BMBL), 6th Edition.
  3. International Organization for Standardization (ISO). (2018). ISO 14644-1:2015 Cleanrooms and associated controlled environments — Part 1: Classification of air cleanliness.

Snyli Environmental Technology (Shandong) Co., Ltd.
Snyli Environmental Technology (Shandong) Co., Ltd. is well-known as one of the leading clean bench manufacturers and suppliers in China. Please feel free to wholesale high quality clean bench at competitive price from our factory. Contact us for more details.
Address: Room 907, Building 1, Qisheng Plaza, 1666 Xinluo Street, Jinan Area, China (Shandong) Pilot Free Trade Zone
E-mail: info@snyli.com
WebSite: https://www.snylifilter.com/