ISO 22609: which instrument fits and how to decide

The Face Mask Synthetic Blood Penetration Tester (TNG1044) and Synthetic Blood Penetration Tester (TNG1049) are suitable for testing in accordance with ISO 22609, as their specifications align with the required parameters for synthetic blood penetration assessment.

Matching Specifications to ISO 22609 Requirements

ISO 22609 outlines the procedures for evaluating the resistance of face masks to synthetic blood penetration. For compliance testing, instruments must replicate the conditions described in the standard, including the application of synthetic blood at specific distances and velocities. The Face Mask Synthetic Blood Penetration Tester (TNG1044) meets these requirements through its precise control over spraying parameters. For instance, the blood spraying distance is set at (300 ± 10) mm, which matches the standard's requirement for simulating realistic fluid exposure. This ensures that the test conditions are consistent with real-world scenarios, providing reliable and reproducible results.

Additionally, the nozzle inner diameter of 0.84 mm and nozzle length of 12.7 mm are critical for delivering synthetic blood at the correct flow rate and pressure. These dimensions ensure that the liquid is applied in a manner that mimics human blood, allowing for accurate assessment of the mask's protective capabilities. The spraying speed options of 450 cm/s, 550 cm/s, and 635 cm/s provide flexibility to simulate different levels of fluid exposure, which is essential for comprehensive testing.

Ensuring Accuracy and Reproducibility

The Face Mask Synthetic Blood Penetration Tester (TNG1044) also includes adjustable watching time of 10 seconds, which allows for consistent observation of the mask's performance under controlled conditions. This feature is vital for ensuring that the test results are not influenced by variations in observation timing, thus enhancing the reliability of the data collected.

The Synthetic Blood Penetration Tester (TNG1049) is designed for similar applications but may be used for broader testing scenarios. While it does not have detailed specifications listed, it is intended for use in environments where synthetic blood penetration testing is required, and its design aligns with the principles of ISO 22609. This makes it a suitable choice for laboratories needing a versatile instrument for compliance testing.

Conclusion and Instrument Selection

When selecting an instrument for ISO 22609 testing, it is essential to focus on specifications such as spraying distance, nozzle dimensions, and spraying speed. The Face Mask Synthetic Blood Penetration Tester (TNG1044) provides these critical parameters, ensuring accurate and repeatable results. The Synthetic Blood Penetration Tester (TNG1049) complements this by offering a flexible solution for a range of testing needs. Together, these instruments support the rigorous requirements of ISO 22609, enabling laboratories to conduct reliable and standardized testing.

Instrument models referenced

• TNG1044 Face Mask Synthetic Blood Penetration Tester (Air / Water / Vapour Permeability Testing). Published specifications include Blood spraying distance: (300 ± 10) mm; Nozzle inner diameter: 0.84 mm; Nozzle length: 12.7 mm.
• TNG1049 Synthetic Blood Penetration Tester (Air / Water / Vapour Permeability Testing).