As a closed space to control particle pollution in the environment, cleanroom is widely used in precision industries such as electronics, pharmaceuticals, bioengineering and so on. Air filters play a vital role in these highly demanding environments. They are responsible for collecting dust and particles in the air and are key facilities to maintain cleanroom standards.

Filtration efficiency rating

In the cleanroom, air filters are divided into different grades according to filtration efficiency, including primary efficiency, medium efficiency and high efficiency filters. These different levels of filters are designed to handle particulate matter of different sizes. Primary filters are typically used to capture larger particles, such as dust and hair; medium filters can handle finer particles; and high efficiency filters can filter out very fine particles, such as viruses, bacteria, and some chemical contaminants. Each level of filter is an important barrier to ensure clean indoor air quality.

Replacement frequency

In addition to the classification, the frequency of air filter replacement varies from grade to grade. The primary filter usually needs to be replaced every 3 months because it intercepts more large particulate matter. Medium efficiency filters may need to be replaced every 6 to 12 months, depending on usage. The high efficiency filter can be used for more than 3 years because of its high filtration capacity. Regular filter replacement is a necessary measure to maintain the cleanliness of the cleanroom, because as the filter is saturated, its filtration efficiency will gradually decrease, which may lead to particulate penetration and affect the cleanliness of the cleanroom.

Choose the right air filter

Selecting the right air filter is critical to maintaining the cleanliness level of the cleanroom. A suitable air filter not only refers to its high filtering efficiency, but also considers its applicability, economy and reliability. When choosing, we need to consider the production process in the cleanroom, the sensitivity of products to environmental pollution and the specific requirements of regulations for cleanliness. For example, if the cleanroom is used for the production of pharmaceutical products, the choice of high efficiency filter is particularly important because it is directly related to the safety and effectiveness of the drug.

Air filter is one of the necessary conditions for the success of the cleanroom. By setting different levels of filters and replacing them according to the established frequency, the air cleanliness in the cleanroom can be effectively guaranteed, the product quality can be protected, and the cross contamination can be avoided. Therefore, proper selection and maintenance of air filters is fundamental to achieving high quality production standards for any industry that relies on a cleanroom environment.

Cleanroom air filter test

the cleanroom air filters should be tested to ensure no leakages, your supplier should also offer you a test report of the filters.

there are MPPS or leakage tests two methods.

Our filters are tested according to MPPS, every filter will come with a test report.

Airflow rate & Pressure drop

The cleanroom filter airflow rate pressure drop expresses the air volume and the corresponding resistance in the use process, this is a continuous incremental curve.

By looking at this curve, you can see if your choice will fit your system.

Housing design

Cleanroom filters have a lot of structure and frame design. If you only purchase according to efficiency and size, the filter you buy may not be installed correctly.

Confirm the housing design with your supplier or let them provide the corresponding product drawings and confirm with your engineer to ensure that the purchased filter is correct.

Filter media design

Cleanroom filters have lots of media designs, which affect the air flow rate and resistance of the filter. It will also affect the price.

Now there are also PTFE filter media used to replace traditional fiberglass materials.

We can help you choosing the correct filter media and ensure media is enough to minimum the initial resistance.

Gasket

The gasket can be placed on the air inlet (upstream) or outlet side (downstream), or even both sides.

Some clients require a seamless gasket or a gel gasket is also available for us.

A proper package

Because HEPA filters require very strong packaging, mainly because the built-in fiberglass is very vulnerable to damage.

Despite the protection of the carton, excessive crushing and bumping may cause damage to the interior and affect the filtration efficiency during long-distance transportation.

Our cleanroom filters are properly packed with heavy-duty carton boxes and palleted. That can ensure safety during transportation.