Correspondence between high-efficiency filter test report and physical identification, key points for procurement acceptance check

When purchasing high-efficiency filters, receiving a test report does not mean acceptance is complete. What really needs to be confirmed is: which actual machine this report corresponds to.

In a bulk purchasing scenario, filters of the same model may belong to different batches and be installed in different locations. If there is no traceable numbering relationship between the report and the actual object, it will be difficult to determine which product or installation interface the problem lies in when abnormal efficiency or pressure difference occurs later.

Produced by Aili Industrial HEPA/ULPA air filters are marked with identifiable product labels when they leave the factory, making it easier for purchasers to establish corresponding relationships during acceptance.

Step 1: First confirm what the report test object is

When you get the test report, the first thing to do is not to look at the conclusion, but to look at the test object.。

Did the report test the entire finished filter, or only the filter media? What is the test air volume? What method is used? If the procurement technical agreement stipulates 'unit-by-unit reporting', then there is only one sample report of the same model, which cannot automatically cover all physical items.

The core judgment in this step is: the test objects on the report must correspond one-to-one with the physical objects you receive.

Step 2: Check the identifiable information on the physical object

Each high-efficiency filter should have identifiable identification information when it leaves the factory. When checking, focus on:

• Product model : Is it consistent with the order model and technical agreement?

• Specifications : length, width, height and flange form are consistent with the report

• Efficiency levels : H13, H14, U15, etc. are consistent with the report labeling

• Unique number : Whether there is a traceable product number

If the nameplate grade, size or number is inconsistent with the report, it is recommended to suspend the installation first and ask the supplier to verify and correct the information. Do not modify the report number yourself or replace it with reports from other products.

For projects that adopt a terminal high-efficiency air supply outlet structure, the filter and the air supply outlet box are often delivered as one unit. During acceptance, it is also necessary to check whether the box identification and filter identification match. Please refer to terminal high-efficiency air supply vents/high-efficiency filter boxes . Delivery instructions for

Step 3: Establish the corresponding relationship of 'one device, one location'

After the report and physical objects are verified, the corresponding relationship needs to be recorded in the record.。

It is recommended to set the following fields in the delivery table:

Field leak detection reports also use the same location number . In this way, when troubleshooting problems later, you can directly locate the specific product instead of relying on general descriptions such as 'same batch'.

Step 4: Understand the complete closed loop of the traceable delivery chain

A complete traceable delivery chain should start from the order model and go through:

Order model → Physical number → Installation location → Factory report → On-site leak detection record

If any one of these links is missing, it will be difficult to determine the source of the anomaly in the future. This is not something that can only be accomplished by a complex management system, but a problem that can be solved by a delivery table and a set of unified numbering rules.

In the overall clean room scheme, filters are usually combined with FFU fan filter unit、EFU equipment end fan filter unit and other air supply equipment are used together. If the air supply equipment and filters belong to different suppliers and the numbering system is not unified, the difficulty of traceability will be further increased. Aili Industries adopts a unified manufacturing and labeling system for FFU, EFU and filters, which helps reduce such connection problems.

Step 5: Differences in identification of different filtering levels

Filters with different efficiency levels have slightly different emphasis on identification information. by Take the ULPA ultra-high-efficiency filter as an example. Since it has higher filtration efficiency requirements for 0.12μm particles, the verification of reported test methods and scanning leak detection results is usually more detailed during acceptance.

Purchasers can create a checklist based on filtering levels to avoid applying the same set of standards to all categories.

quick checklist

About Aili Industrial’s filter delivery support

Aili Industrial has complete manufacturing capabilities in the field of clean room filters, from filter materials, filter elements to finished product assembly, and its products cover HEPA, ULPA high-efficiency filters and chemical filters. At the same time, the company has With the complete machine manufacturing capabilities of FFU fan filter unit and EFU equipment-side fan filter unit, filters and air supply equipment can be delivered in the same system.

During the project delivery process, Aili Industries can provide product identification information and corresponding testing documents in accordance with the project agreement to help users establish the corresponding relationship between product numbers, installation locations and acceptance records to facilitate subsequent maintenance and traceability.

Aili Industrial serves customers in various industries such as semiconductors, pharmaceuticals, food, and medical care. Its product line covers FFU, EFU, HEPA/ULPA air filters, chemical filters, BFU, high-efficiency air outlets, air showers, clean workbenches, clean screens, fan boxes, air conditioning boxes and other clean room equipment.