LFY-706B Particulate Matter Filtration Efficiency Tester

Main application

Used for testing the particle filtration efficiency of daily protective masks, medical masks, protective suits, and respirators. Suitable for medical device inspection centers, safety protection inspection centers, labor protection inspection centers, drug inspection centers, disease prevention and control centers, textile testing centers, hospitals, mask and respirator manufacturing enterprises, etc.

Technical specifications

1. Uses a cold aerosol generator to produce continuous and stable aerosol particles, and the solution can be easily added.

2. Uses a high-precision PM 2.5 sensor to measure the aerosol concentration.

3. The entire process has a particle leakage prevention design to protect the safety of the experimental personnel.

4. Aerosol generator: compatible with both salt and oil.

5. Equipped with an aerosol particle static charge neutralization device.

6. Pneumatic fixtures with protective devices, safe and convenient to use.

7. Configured with a temperature and humidity sensor to display the environmental temperature and humidity (temperature and humidity requirements: 25℃ ± 5℃, 30% RH ± 10% RH).

8. Equipped with a glass rotor flowmeter, vacuum pump, and laser dust particle counter.

9. Filter efficiency detection range: 0 - 99.999%.

10. Filter efficiency detection flowmeter range (10 - 100) L/min, accuracy 2.5 grade.

11. Filter efficiency sampling frequency: 2 times/min.

12. Filter efficiency particle concentration: (20 - 30) mg/m3; median diameter of count: salt particles (0.075 ± 0.02) μm, oil particles (0.185 ± 0.02) μm; geometric standard deviation of particle size distribution: salt particles ≤ 1.86, oil particles ≤ 1.60; dynamic detection range (0.001 - 100) mg/m3, accuracy 1%.

13. Instrument accuracy grade (accuracy level): 1 grade

14. Control system: Computer controls the test process, automatically collects data, and is equipped with a dedicated computer and testing software.

15. The computer automatically tests the gas concentration and calculates the filter efficiency; it can save, output, query, and print the test data.

16. Power supply: AC220V 50Hz

Applicable standards (different standards require different accessories)

GB/T 32610-2016 Daily Protective Mask Technical Specifications 6.13 (Appendix A)

GB/T 38413-2019 Textiles – Test methods for filtration of particulate matter

GB 2626-2019 Respiratory Protection Self-Contained Filtering Dust Respirator

GB 2890-2022 Respiratory Protection Self-Contained Filtering Respirator

GB 19082-2023 Medical Disposable Protective Clothing

GB 19803-2023 Medical Protective Mask

YY 0469-2011 Medical Surgical Masks

YY/T 1642-2019 Disposable Medical Protective Caps

YY/T 1633-2019 Disposable Medical Protective Gloves

YY/T 1799-2020 Technical Requirements for Reusable Medical Protective Clothing 4.3.4.2

FZ/T 64114-2024 Technical Specification for Nonwoven Fabrics Produced by Meltblowing Method for Masks

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