How to teach you how to buy a super clean workbench

Use clean table before the purchase, you need to grasp how it works.

working principle

The working principle of the 100-stage ultra-clean workbench is that the fan draws in air from the environment, first passes through a foam-like patio cotton called “primary filter”, which filters out the large particles of dust in the air; A HEPA filter called "hee efficiency particulate air filter (HEPA)" filters out the remaining small particles of dust larger than 0.3 microns. Through the two-layer filtration, the air entering the working area of ​​the ultra-clean cavity reaches the dust-free standard of 100. Since the microorganisms such as bacteria can only adhere to the dust in the air, the ultra-clean platform achieves dust-free performance. Sterile.

classification

According to the operation method to classify them, they can be divided into: single-sided single-sided, single-sided double-sided, double-sided single-sided, double-sided double-sided, three-sided single-sided and other five kinds of ultra-clean workbench.

According to its airflow direction, it can be divided into horizontal unidirectional flow ultra-clean workbench , vertical unidirectional flow ultra-clean workbench and non-unidirectional flow ultra-clean workbench .

Horizontal unidirectional flow ultra-clean workbench : The filtered clean air is directly blown to the operator from the back to the front. It is a versatile local clean bench. It is widely used in electronics, defense, precision instruments, instruments, Pharmaceutical industry, etc.

Vertical unidirectional flow ultra-clean workbench : Vertical flow means that the filtered clean air is blown from top to bottom to the ultra-clean countertop, and then blows out the clean bench forward and backward. The vertical flow of the clean bench is usually in the laboratory. Used in biopharmaceutical, optoelectronics, microelectronics, hard disk manufacturing and other fields.

1. Materials

The appearance of some ultra-clean workbench is more delicate and novel, and the stainless steel material used in the material is better, so there is a higher cost on the outer casing. For example, some ultra-clean workbench countertops are formed by one-piece stainless steel plate, which is not welded and easy to clean.

2. Fan

The fans and filters of the ultra-clean workbench represent the technical level of the product. Therefore, the fan is also a component to distinguish the price. The good ultra-clean workbench usually uses the imported fan. The fan has low noise and low vibration, so the operator can experiment in a quiet environment, and the vibration of the ultra-clean workbench will also affect. Go to the normal experiment.

3. Filter

The impact on the price fluctuation of the ultra-clean workbench is the filter. Since the filter directly affects the cleanliness and service life of the ultra-clean workbench , the filter with good quality will have a much higher cost in the lower grade filter. .

Of course, the length of the filter's service life is related to the cleanliness of the air and the frequency of use of the instrument. In the temperate zone, the ultra-clean workbench can be used in general laboratories. However, in tropical or subtropical regions, due to the high level of pollen or dusty areas in the atmosphere, the ultra-clean workbench should be placed in a good double-door. Indoor use. Under no circumstances should the inlet hood of the clean bench be facing the open door or window to avoid affecting the service life of the air filter.

4. Control panel

The selection and use of a clean bench also requires an understanding of the principles and ease of operation of the appliance, the specifications and performance of fluorescent and UV germicidal lamps. On the one hand, this is to judge the quality of the product, and the second aspect is to ensure the data record for future maintenance.

5. After sales service

Although the advancement and development of science and technology make the level of after-sales service related to ultra-clean workbench and maintenance, repair and other services higher and higher, but due to improper use of the user or negligence of the staff, there are various situations in which the device panel is not sensitive. Occasionally, companies that are excellent at Zui are not guaranteed to never make mistakes and cause complaints from customers. Therefore, timely remediation of mistakes, correction of errors, and effective handling of customer complaints and other after-sales service measures have become an effective way to ensure the consumer rights of ultra-clean workbench equipment.

Shanghai Sujing Industrial Co., Ltd.
　　
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SUJING—JINGHUA

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