Author: Vanessa 17 Feb. 2025     Category:   AIR Filter

Quality management of air filters

Air filters play a vital role in modern life and industrial production. For example, improving air quality and ensuring the cleanliness and safety of processes in industrial production. In order to ensure that the performance of air filters in different applications meets expectations, a series of rigorous tests are required. According to the rating requirements of air filters, such as GB/T 14295, EN 1822, etc., the conventional test items are:

1. Filtration efficiency

  • Particle filtration efficiency: Test the filter’s filtration capacity for particles of different particle sizes, such as PM2.5, PM10, 0.3 micron particles, etc., usually expressed as a percentage. For example, the filtration efficiency of a high-efficiency air filter for 0.3 micron particles should reach 99.97%.
  • Gas filtration efficiency: Evaluate the filter’s ability to remove harmful gases in the air, such as ozone, volatile organic compounds (VOCs), formaldehyde, etc., and the results are expressed as removal rate or adsorption capacity.

2. Resistance

  • Initial pressure drop: refers to the initial airflow resistance of the filter under normal flow, generally expressed in Pascal (Pa) or inches of water column (in.wc). The smaller the pressure drop, the lower the energy consumption.
  • Pressure drop growth: With the increase of use time or dust accumulation, the change of filter pressure drop can reflect its durability and dust accumulation capacity.

3. Particle capture capacity

Evaluate by testing the capture rate of the filter for particles of different sizes, expressed as a percentage, to understand its filtering effect under different particle sizes.

4. Durability

  • High temperature resistance test: Place the filter in a high temperature environment to test its performance stability and see if it can work normally under high temperature conditions.
  • Humidity resistance test: Test the performance of the filter in a high humidity environment to evaluate its performance and durability under humid conditions.
  • Chemical resistance test: Expose the filter to chemicals such as acids, alkalis, and solvents to detect changes in its performance and ensure stability in a chemical environment.

5. Gas adsorption capacity

For filters with adsorption function such as activated carbon filters, evaluate their adsorption effect on specific harmful gases and the saturation of activated carbon filters to determine the timing of replacing the filters.

6. Mechanical strength

  • Pressure resistance test: Test the mechanical strength of the filter under high pressure environment to ensure that it does not deform or break under pressure conditions.
  • Anti-breakage test: Simulate physical impact or extrusion, test the durability of the filter, and evaluate its anti-breakage ability.

7. Air flow

Determine the rated air flow of the filter under specific conditions, expressed in cubic meters per hour (m³/h) or cubic feet per minute (cfm), to ensure that it can effectively filter the air in normal use.

8. Acoustic performance

Measure the noise level generated by the filter when it is working, expressed in decibels (dB). The lower the noise, the more comfortable the use environment.

9. Air quality

Evaluate the emission of harmful substances in the air by the filter to ensure that the quality of the discharged air meets the relevant standards and avoid secondary pollution.

10. Integrity

Check the filter for damage, holes, etc. to ensure the filtering effect. This is especially important for occasions with high filtering accuracy requirements, such as sterilization filtration in pharmaceutical production.

11. Appearance

Check the appearance of the filter for defects such as damage, deformation and stains. Good appearance can ensure its normal use and filtering effect.

In order to ensure the quality of air filters, Trenntech Technology specially purchases professional testing equipment. Before each product leaves the factory, it will be tested for quality. If it meets the requirements, Trenntech will issue a qualified document for the product. Otherwise, it will be treated as waste. Trenntech prohibits unqualified products from entering the sales link.

Vanessa

My name is Vanessa, and I am a content writer specializing in corporate content creation. With more than 10 years of writing experience, I am committed to providing companies with high-quality, impactful content to help them stand out in a competitive market. My background covers multiple industries, including technology, finance, marketing, etc. In the process, I have accumulated rich knowledge and skills, and can deeply understand the needs of audiences in different fields, so as to create more targeted articles and content. I am good at writing blog posts, white papers, case studies, product descriptions, etc., and I am familiar with SEO optimization strategies to ensure that the content gets good exposure in search engines. At the same time, I also have good project management skills and can complete high-quality works within a tight time frame. I believe that high-quality content can not only convey information, but also build customer trust and brand image.