Preparing for EN 14683 testing: from method to instrument setup

The TNG1047, TNG1044, and TNG1049 instruments are suitable for testing compliance with EN 14683, as their specifications align with the required parameters for bacterial filtration efficiency and synthetic blood penetration testing.

Confirming the Standard Code and Method Requirements Before procurement, it is essential to confirm that the testing method aligns with EN 14683. This standard specifies the requirements for fluid resistance and bacterial filtration efficiency for medical face masks. The TNG1047, TNG1044, and TNG1049 are designed to meet these criteria. For instance, the TNG1047 is specifically used for bacterial filtration efficiency testing, while the TNG1044 is designed for synthetic blood penetration testing. The TNG1049, although lacking detailed specifications, is likely intended for similar applications based on its category.

Identifying the Required Measuring Range Each instrument must be selected based on the required measuring range specified in EN 14683. The TNG1047 supports a sample flow rate of 28.3 L/min for both A and B, which is critical for accurately measuring bacterial filtration efficiency. This flow rate ensures that the test conditions are consistent with the standard's requirements. The TNG1044, with a blood spraying distance of (300 ± 10) mm, meets the standard's requirement for simulating real-world conditions during synthetic blood penetration testing. The nozzle inner diameter of 0.84 mm and nozzle length of 12.7 mm further ensure that the test setup is precise and replicable.

Checking the Published Specification Table When evaluating the specifications, it is important to cross-reference them with the EN 14683 standard. The TNG1047's peristaltic pump flow of (0.1～3.0)mL/min ensures that the test can be conducted with controlled fluid delivery, which is essential for accurate results. The front pressure of flow meter A, ranging from (-20～0)kPa, allows for the measurement of pressure differences during the test, which is a key parameter in assessing filtration efficiency. The TNG1044's spraying speed and time, which are adjustable and within specified ranges, ensure that the test can be conducted under various conditions, providing a comprehensive assessment of the mask's performance.

Requesting a Quotation and Finalizing the Setup Once the correct instruments have been identified and their specifications verified against EN 14683, the next step is to request a quotation. This should include details on the instruments, their specifications, and any additional components required for the testing setup. It is crucial to ensure that the quotation reflects the exact specifications provided in the instrument data to avoid any discrepancies. After receiving the quotation, the setup can be finalized, ensuring that all testing procedures are conducted in compliance with the standard.