How to read the ULPA test report? Efficiency, Penetration, Resistance and Raw Data

The ULPA filter test report should look at the object, method, working conditions and results at the same time. Efficiency, penetration rate and resistance describe different performances, and a single percentage cannot fully determine whether the filter element meets the project requirements. One of the most common numbers on reports is the efficiency percentage, but if the particle size the efficiency corresponds to, what air volume it is measured under, and which method is used, if these conditions are not clearly understood, the percentage will have no comparative meaning. Aili Industry isThe test report of the ULPA ultra-high efficiency filter lists the object number, test standard, test air volume and result conditions together. The test data is filed according to the serial number. The report does not just give a conclusion, but gives a verifiable basis.

1. First confirm that the report corresponds to the physical object: the object and number must match.

Check the model, serial number, size, drawing version and test date, and distinguish filter material data, finished product testing and post-installation verification.

Which filter element is written in the report is the first thing to do when reading the report. If there is no test report corresponding to the serial number, it can only say that 'sampling inspection has been carried out among similar products', but not 'this one has been tested'. Aili Industry isWhen the HEPA/ULPA filter is delivered, the test report is filed according to the single serial number.The test report of the non-standard ULPA filter project is also marked with a confirmation drawing version to ensure that the report corresponds to the actual object and the drawing. The relationship between levels and filtering requirements can be found inISO cleanliness level comparison。

2. Conditions for reading results: What do efficiency, penetration rate and resistance correspond to?

The efficiency and penetration rate need to correspond to the particle size or MPPS and the method used, and the resistance needs to correspond to the test air volume. Values ​​under different conditions cannot be sorted directly.

Efficiency is obtained under specific particle sizes and test methods, penetration rate is a complementary expression of efficiency, and resistance must be meaningful under the corresponding air volume. If the three values ​​are separated from their respective conditions, it will be meaningless to compare them together. Aili Industry isIn the test report of the ULPA ultra-high-efficiency filter , the efficiency item indicates the test standard and particle size conditions, and the resistance item indicates the test air volume. The data for different conditions are listed in separate lines. There is no need to calculate the corresponding relationship by yourself when reading the report. The relationship between efficiency and selection can be referred toHEPA FAQs and Selection Guide。

3. Check complete records: local leak detection range, judgment basis and exception handling

Pay attention to the local leak detection range, judgment basis, instruments and abnormality handling. Projects that require original data should agree on the delivery form in advance and do not equate the certificate with all data.

The certificate is the conclusion, and the test report is the process. What areas are covered by partial scanning leak detection, what is the basis for judgment, what is the status of the instrument, and whether there are any abnormal re-tests, these should be recorded in the test report. Aili Industry isIn non-standard ULPA filter projects, the coverage and judgment records of scanning leak detection can be provided according to project requirements. For projects that require original data, the data format and delivery scope can be agreed upon during the procurement stage. For correspondence between sealing and leak detection results, please refer toULPA ultra-high efficiency filter FAQ and selection guide。

4. The relationship between the report and the original data: the records behind the conclusions must be accessible

The efficiency value and resistance value on the report are a summary of the original data, which records the actual measurement conditions of each measuring point and each scanning position. The relationship between the report and the original data is that of 'conclusion' and 'basis', and the two should be filed accordingly when delivered.

Aili Industry isWhen the ULPA ultra-high-efficiency filter is delivered, the report and original records are filed according to the serial number, which can be provided when the project requires it;the FFU fan filter unit also establishes test records for each unit, and files them together with the filter element test report to facilitate verification during project acceptance. The factory test of For the traceability method of inspection records, please refer toHEPA FAQs and Selection Guide。

5. Related questions and answers

Is penetration rate the same as leakage rate?
The test objects and methods of the two may be different and should be understood according to the report definition and cannot be interchanged just by name.

The report states high efficiency but does not indicate the test air volume. Is it acceptable?
Additional confirmation is required. Both resistance and efficiency need to correspond to test conditions, and data lacking conditions cannot be compared with the actual working conditions of the system.

Can the certificate replace all testing data?
cannot. The certificate is the conclusion, and the original data and process records are the basis. If the project requires it, the delivery scope should be agreed upon during the procurement stage.

6. Related articles

ULPA ultra-high efficiency filter FAQ and selection guide

ULPA ultra high efficiency filter

Non-standard customized 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 Industry isWhen the HEPA/ULPA filter is delivered, the test report is filed according to the single serial number.The ULPA ultra-high efficiency filter report lists the object number, test standard, test air volume and result conditions. The efficiency and resistance data are presented in separate rows corresponding to the respective test conditions. The original records are archived according to the serial number and can be provided together.The non-standard ULPA filter project report is marked with a confirmed drawing version, and scanning leak detection coverage and judgment records can be provided upon request;the FFU fan filter unit will establish test records for each unit and file them together with the filter element report. The factory test of 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.