In industries such as modern biology, medicine, electronics, and food that require a clean environment, ultra clean workbenches play an irreplaceable role as basic experimental equipment. Among them, the double person single-sided ultra clean workbench is widely used in clean experimental scenarios that require two people to work together due to its unique structural design and efficient operating space. This article will systematically elaborate on its design features and usage standards.
1、 Design Features
1. Unidirectional horizontal/vertical laminar air supply system
Double person single-sided ultra clean workbenches typically use high-efficiency filters (HEPA or ULPA) in conjunction with fan systems to create a stable unidirectional airflow. According to the direction of airflow, it can be divided into two types: horizontal flow and vertical flow. Horizontal flow is suitable for scenarios that do not require high operator protection, while vertical flow can better prevent cross contamination and ensure sample cleanliness. After efficient filtration, the airflow covers the entire work area at a uniform speed, effectively isolating external pollutants.
2. Layout of double operation space
Compared to a single person workbench, a double person single-sided ultra clean workbench typically has a workbench width of over 1.5 meters and a depth of about 70-80 centimeters, which can accommodate two experimenters operating side by side at the same time. There is a unified operation window in front of the tabletop, with no independent partitions on both sides, which facilitates collaboration and communication, and improves experimental efficiency. This "single-sided air intake, double occupancy" structure balances functionality and economy while saving space.
3. High quality materials and humanized details
The main body of the workbench is mostly made of 304 stainless steel or sprayed steel plate, which is corrosion-resistant and easy to clean. The tabletop is flat and seamless, avoiding dust accumulation and dead corners; The front windows are mostly made of adjustable tempered glass, which not only ensures clear visibility, but also has good sealing and safety. Some models are also equipped with LED lighting, ultraviolet sterilization lamps, power sockets, wind speed display and alarm systems, etc., to enhance convenience and safety of use.
4. Modularity and customizability
Multiple customization options are supported for different industry needs, such as adding negative pressure devices, integrating gas interfaces, installing anti-static systems, etc., to meet diverse application scenarios such as cell culture, sterile formulation preparation, and precision electronic assembly.
2、 Usage standards
To ensure the continuous and stable operation of the ultra clean workbench and maintain a high level of cleanliness, users must strictly follow the following operating procedures:
1. Preparation before use
Turn on the UV lamp for 30 minutes to sterilize the work area (note: personnel must not be present).
After turning off the UV lamp, start the fan and run it for 10-15 minutes until the airflow stabilizes before starting the operation.
Check if the pressure difference of the high-efficiency filter is normal and confirm that there are no alarm prompts.
2. Precautions during the operation process
All items should undergo surface disinfection before entering the work area to avoid introducing pollutants.
Items should be placed as far back as possible, at least 10 centimeters away from the front window, to avoid interfering with airflow.
Avoid moving your arms quickly or frequently opening and closing the front window in the workspace to prevent airflow turbulence.
It is strictly prohibited to perform operations that generate large amounts of aerosols on the table (such as severe shaking, centrifugation, etc.), and such operations should be carried out in a biosafety cabinet.
When two people collaborate, they should coordinate their actions to avoid obstructing each other's airflow path.
3. Maintenance after use
After the operation is completed, promptly clean the residue on the countertop and wipe the surface with 75% alcohol or specialized disinfectant.
Turn on the UV lamp again for 20-30 minutes to kill any remaining microorganisms.
Turn off the fan, lighting, and power, and keep a record of their usage.
4. Regular maintenance and testing
It is recommended to replace the primary filter every 6 months and check the integrity of the high-efficiency filter annually (such as using PAO leak detection method).
Regularly calibrate the wind speed (standard is 0.3-0.5 m/s) to ensure that the laminar flow effect meets the standard.
Keep the environment around the device clean and avoid clogging the air vents.
The double person single-sided ultra clean workbench has become an important equipment in many laboratories and clean workshops due to its scientific airflow organization, spacious collaborative space, and reliable cleaning performance. However, even the most advanced equipment requires standardized operation and maintenance to achieve maximum efficiency. Only by fully understanding its design principles and strictly following the usage regulations can the experimental goals of "efficiency, safety, and sterility" be truly achieved, providing solid guarantees for scientific research and production.