What are the implications of low outgassing chemical filter media for sensitive processes?

Low outgassing chemical filter materials help reduce the possibility that the filter section itself becomes a source of sensitive process pollution, but the name of low outgassing requires corresponding objects, methods and conditions. The material description should not be taken directly as proof of no release for the entire device. The significance of low outgassing is to reduce the risk of 'secondary pollution' in the filter section itself, rather than replacing the processing capacity of the target gas.

1. Check the complete material system

In addition to filter media, frames, adhesives, seals and packaging may also affect the air. The evaluation should cover product configuration and actual operating environment.

Chemical filters are composed of filter media, frames, seals and adhesives. The filter material itself has low outgassing, which does not mean that the frame coating or sealant also has low outgassing. In sensitive processes, the release of any component may affect the product. Aili Industry ischemical filter selection.Check material release according to complete product configuration during The frame and sealing materials of the box-type chemical filter are confirmed according to the project environmental conditions. Industry information also mentions that chemical filters should have no outgassing and low dust generation characteristics to reduce the risk of secondary pollution. The relationship between levels and filtering requirements can be found inISO cleanliness level comparison。-2-16

2. Connect specific process goals

Different processes focus on different ingredients and concentrations. It is necessary to clarify which releases are not allowed to enter the protected area and verify them at downstream points.

The photolithography process focuses on the impact of alkaline gases on photoresist, film deposition focuses on organic condensation and metal contamination, and display manufacturing focuses on the impact of organic outgassing on the OLED process. The significance of low-gas-releasing filter materials should be judged based on the sensitive components of the specific process. Aili Industry isFFU chemical filters, check the suitability of the media according to the process requirements at the equipment end.When matching Flat plate chemical filters are suitable for use inside sensitive equipment where space is limited. The relationship between low outgassing and process protection can be referred toHEPA FAQs and Selection Guide . Chemical filter FFU adds a chemical filter layer to ordinary FFU. Its material release needs to be evaluated together with the FFU box material, not just the chemical filter material itself.

3. Examples of project judgment

If relevant organic components are still found after filtering at the equipment end, the filter section materials and internal sources of the equipment can be investigated at the same time, not just the inlet air.

If organic components are still detected in the gas after the filtration section, the source may be the filter material, sealant, frame coating or internal equipment materials. Low outgassing filter media only reduces the possibility of one of the sources and cannot eliminate the others. When making judgments, samples should be taken along the airflow path, rather than just measuring the inlet and outlet.

4. Application Check Points

5. Verification and subsequent use

The filter media ultimately needs to be loaded into the actual structural work. When checking gas suitability, the effective area, air flow distribution, material condition and sealing should also be confirmed. When there are differences between sample data and field conditions, the differences should be explained and corresponding verification arranged to avoid comparing only a single number.

Aili Industry isIn the chemical filter product information, filter material and sealing material information is marked by model.V-type chemical filters are suitable for centralized systems. Specific release levels are subject to corresponding product information and on-site testing.

6. Related questions and answers

Will the low-gas-releasing filter material not release at all?
It cannot be understood this way. Low outgassing is a relative concept. It depends on the corresponding testing objects, methods and conditions. It cannot be regarded as an absolute guarantee of zero release.

The filter material has low outgassing, do the frame and seals also need attention?
need. Frame coatings, adhesives and seals may all be released, and sensitive processes should verify the complete product configuration.

Can low outgassing replace gas filtration performance?
cannot. Low gas release reduces the risk of contamination in the filter section itself, and the processing capacity of the target gas still needs to be confirmed separately.

7. Related articles

Chemical filter product series

FFU chemical filter

Box chemical filter

HEPA FAQs and Selection Guide

What is a chemical filter FFU? The main difference from ordinary FFU?

8. Key points for selection and acceptance inspection

9. Aili Industrial products and equipment supporting equipment

Aili Industry provides chemical filters and clean air supply equipment selection packages. It can compare FFU package, box type, flat type and V-shaped products according to gas composition, treatment air volume and installation conditions. The manufacturing and supporting system covers the independent research and development and production of motors and fans, control systems, sheet metal, air filters and complete machine assembly, making it easy to jointly confirm the filter section, power and structural conditions. The specific gas effect, environmental suitability and service life still need to be verified based on the corresponding configuration data and actual working conditions.

learnChemical filter product series , check the products and air supply matching according to the project conditions. Clarify the goal → Check the conditions → Verify the effect → Arrange maintenance.