How to formulate a non-standard ULPA technology agreement? Dimensions, working conditions and acceptance requirements

The non-standard ULPA filter technical agreement should write down the size interface, performance conditions, material requirements, testing methods and delivery materials into verifiable items. The vague 'high efficiency, low resistance, adaptability' is difficult to become the basis for acceptance. The function of the technical agreement is not to copy the sample parameters, but to fix the understanding of both parties on 'what to do, how to inspect, and what is considered qualified.' If it is written in a general way, each will have its own explanation during acceptance; if it is written in detail, both manufacturing and acceptance will have evidence to rely on. Aili Industrial has a production base of about 30,000 square meters. The manufacturing system covers motors, fans, control systems, sheet metal, air filters and complete machine assembly. The dimensions, working conditions and acceptance items in the technical agreement can all find corresponding product capability support within the same system. There is no need to write ambiguous conditions and negotiate later.

1. Complete the drawings and performance specifications: size, air volume, resistance and grade should be written together

Clarify the drawing version, unit, tolerance, airflow direction, grade basis, target air volume and corresponding resistance requirements, and distinguish between necessary items and items to be confirmed.

If the dimensions and performance in the technical agreement are written separately, there will easily be a disconnect between 'dimensions are based on drawings and performance is based on samples.' The overall dimensions and sealing surface position on the drawing should correspond to the same product configuration as the resistance and efficiency data under the target air volume. Aili Industry isIn the HEPA/ULPA filter non-standard project, the confirmation drawings and performance data are listed as a set. The drawings are marked with version, tolerance and air flow direction. The performance items correspond to the target air volume and resistance conditions.The detection data of ULPA ultra-high efficiency filter is provided in the same configuration. The relationship between levels and particle limits can be found inISO cleanliness level comparison。

2. Write down the special environment and changes: There must be procedures for temperature and humidity, chemical exposure and alternative materials.

Temperature and humidity, chemical exposure, low outgassing or other material requirements need to be listed separately, and there should be a confirmation process for alternative materials and drawing changes.

Special working conditions are easily covered by the phrase 'suitable for high humidity environments' in the agreement, but the understanding of 'high humidity' by both the supply and demand parties may be completely different. The agreement should specify the specific temperature range, humidity range, whether there is a risk of condensation, the types of chemicals exposed, and whether low-outgassing materials are required. Aili Industry can match filter materials and sealing materials according to working conditions in non-standard projects.PTFE HEPA/ULPA filters respond to moisture resistance and specific chemical environment requirements.the liquid tank seal ULPA filter are confirmed according to the environmental conditions. The sealing liquid and tank material of The confirmation process for changes in alternative materials and drawings is stipulated in the agreement to avoid inconsistent acceptance standards caused by changes during production. For matching of materials and working conditions, please refer toHEPA FAQs and Selection Guide。

3. Agree on acceptance and exception handling: testing methods, judgment rules and failure handling must be written in full

List factory and on-site testing, unit-by-unit or sampling items, allowed repair rules, information and numbers, and clarify the handling and re-inspection after failure.

The acceptance clause is the most vague part of a technical agreement. 'Acceptance according to relevant standards' This type of statement does not explain which standard is used, which items are tested, and what the judgment rules are. The agreement should list the items and methods of factory testing, the items and conditions for on-site acceptance, whether unit by unit or sampling, the format and number correspondence of the test report. Aili Industry isIn the ULPA ultra-high efficiency filter project, the inspection items and file granularity can be determined according to the agreement.The acceptance terms of non-standard ULPA filters correspond to the factory inspection capabilities, and the rules for unqualified handling and re-inspection are clarified in the agreement in advance. For the correspondence between testing and acceptance, please refer toULPA ultra-high efficiency filter FAQ and selection guide。

4. The key conditions must be supported by corresponding product capabilities for the agreement to be successful.

No matter how detailed the technical agreement is, if the product capabilities corresponding to the items do not exist, the agreement is just a piece of paper. For example, the agreement requires the sealing structure of the liquid tank, the upper limit of resistance under a specific air volume, and the requirement to scan leak detection reports one by one. These items require the manufacturing end to have corresponding structural forms, testing capabilities, and data management capabilities. Aili Industrial’s product line coverageTank seal ULPA filter、No partition ULPA ultra high efficiency filter、PTFE HEPA/ULPA filters and other structures, the test report is filed according to the serial number, and the structure, performance and data items in the protocol can be corresponded one by one in the same system. In the agreement formulation stage, items are aligned with product capabilities, so that there will be no 'agreement requirements but unable to do' situation during the acceptance stage.

5. Related questions and answers

Does the technical agreement have to have a lot of parameters?
Key conditions affecting manufacturing, installation and acceptance should be retained, and unfounded and uninspectable entries should be avoided.

Is it okay to say 'suitable for high humidity'?
Not specific enough. The temperature, humidity range and whether there is condensation should be added, otherwise the understanding between the supply and demand parties may be different.

What should I do if the acceptance items in the agreement do not match the factory inspection capabilities?
It should be checked during the protocol development stage, and the items should correspond to the testing capabilities and data management capabilities of the manufacturing end to avoid failure to execute during acceptance.

6. Related articles

ULPA ultra-high efficiency filter FAQ and selection guide

Non-standard customized ULPA ultra-high efficiency filter

Liquid tank seal ULPA ultra high efficiency filter

HEPA FAQs and Selection Guide

7. Key points for selection and acceptance inspection

8. Product matching and technical support from Aili Industrial

Aili Industrial has a production base of approximately 30,000 square meters. The manufacturing system covers motors, fans, control systems, sheet metal, air filters and complete machine assembly. The dimensions, working conditions and acceptance items in the technical agreement can all find corresponding product capability support within the same system.HEPA/ULPA filter non-standard items list the confirmation drawings and performance data as a set.ULPA ultra-high efficiency filter detection data is provided in the same configuration and filed by serial number;PTFE HEPA/ULPA filters respond to moisture resistance and specific chemical environment requirements.Liquid tank seal ULPA filter sealing liquid and tank material are confirmed according to environmental conditions.The partition-less ULPA ultra-high efficiency filter corresponds to different installation boundaries.The acceptance terms of non-standard ULPA filters correspond to the factory inspection capabilities, and the rules for unqualified handling and re-inspection can be clarified in the agreement in advance. In the agreement formulation stage, items are aligned with product capabilities. In the acceptance stage, there will be no situation where the agreement requires but cannot be achieved. Provide process objectives, installation drawings, operating conditions and acceptance requirements, and can further communicate ULPA standard specifications, non-standard interfaces, samples and batch matching. The specific parameters and test range are based on the confirmed model and technical documents.