What types of disposable integrated filters are there?

The types of disposable integrated filters can be classified based on different dimensions (such as filtration efficiency, filter material type, application scenario characteristics, etc.). Common classifications are as follows:
I. Classification by Filtration Efficiency Grade (Core Classification Method)
According to international common standards (such as EN 1822) or domestic standards, they are classified into the following categories based on the filtration efficiency for 0.3μm (or 0.12μm) particles:
Sub-high efficiency filter
The filtration efficiency is 95% to 99.9% (for 0.3μm particles), corresponding to grades such as H10 and H11. It is suitable for scenarios with moderate cleanliness requirements, such as ordinary laboratories and food packaging workshops.
High-efficiency Filter (HEPA
The filtration efficiency is ≥99.97% (for 0.3μm particles), corresponding grades such as H13 and H14. It is the most widely used type and can meet the demands of core scenarios such as medical operating rooms, pharmaceutical clean areas, and electronic dust-free workshops.
Ultra-high Efficiency Filter (ULPA
The filtration efficiency is ≥99.999% (for 0.12μm particles), corresponding grades such as U15 and U16. It is mainly used in places with extremely high cleanliness requirements, such as semiconductor chip manufacturing and precision optical instrument production workshops.
Ii. Classification by filter material type
Filter materials are the core factor determining filtration performance. Common types include:
Glass fiber filter material filter
It mainly uses superfine glass fiber as the filter material, featuring high filtration efficiency, large dust holding capacity, and high temperature resistance (able to withstand temperatures above 120℃), but the material is relatively brittle and has slightly weaker impact resistance. It is widely applied in fields such as medical care and electronics.
Polypropylene (PP) melt-blown filter material filter
It is made by polypropylene meltblown process, featuring excellent chemical corrosion resistance, low cost, and enhanced electrostatic adsorption capacity through electret treatment. It is suitable for normal temperature and non-corrosive environments (such as food processing workshops).
PTFE membrane filter material filter
Using polytetrafluoroethylene (PTFE) membrane as the filter material, it features extremely strong resistance to acids and alkalis, as well as high and low temperatures (-200℃ to 260℃). Moreover, its surface is smooth and not prone to dust accumulation, making it suitable for highly corrosive or extreme temperature environments (such as chemical laboratories and high-temperature sterilization areas).
Composite filter material filter
Combining the advantages of multiple filter materials (such as glass fiber + activated carbon layer), it can not only filter particulate matter but also adsorb some gaseous pollutants (such as odors and volatile organic compounds (VOCs)), making it suitable for scenarios with slight odor control requirements (such as cosmetic production workshops).
Iii. Classification by application scenario Characteristics
Designed according to the special requirements of different scenarios (such as fire prevention, moisture resistance, etc.), including
Antibacterial filter
The filter material has undergone antibacterial treatment (such as adding silver ions, nano zinc oxide, etc.), which can inhibit the growth of microorganisms on the surface of the filter material and prevent the filter from becoming a secondary pollution source. It is mainly used in environments prone to bacterial growth, such as medical ICUs and biosafety laboratories.
Fireproof filter
The box body is made of galvanized steel plate or stainless steel material, and flame retardants are added to the filter material, meeting the fire protection grade standards (such as UL 900 Class 1, GB 8624 B1 grade). It is suitable for places with fire protection requirements, such as hospital operating rooms and electronic factories (to avoid fires caused by electric sparks).
Low-resistance type filter
Reduce air resistance and the energy consumption of the fan by optimizing the structure of the filter material (such as the density of wrinkles and the design of air flow channels). It is suitable for places with heavy ventilation system loads, such as large clean workshops and clean areas in shopping malls.
Iv. Classification by installation method/Structural Form
Ceiling-mounted filter
Designed to fit the ceiling keel or color steel plate ceiling structure, it is flush with the ceiling surface after installation, saving space and facilitating direct replacement from the interior. It is the mainstream installation type in the medical and electronic fields.
Wall-mounted filter
It is small in size and can be directly fixed on the wall. It is suitable for small Spaces with local cleanliness requirements, such as above laboratory operation tables and small sterile inoculation rooms.
Horizontal/vertical filters
It is classified into horizontal (horizontal air intake) and vertical (vertical air intake) according to the direction of air flow. The choice is based on the layout of ventilation ducts and is commonly found at the end of the ventilation system in large clean rooms.
Summary
Different types of disposable integrated filters meet the segmented demands of multiple fields such as medical care, pharmaceuticals, electronics, and food through differences in filtration efficiency, filter material characteristics, and structural design. When making a choice, a comprehensive judgment should be made based on the cleanliness requirements of the specific scene, environmental conditions (such as temperature and corrosiveness), and installation methods.