Mask particle protection effect and filtration efficiency tester

Equipment usage:

Used for testing the protective effect and filtration efficiency of daily protective masks and respirators against particulate matter. Suitable for medical device inspection

Center, Safety Protection Inspection Center, Labor Protection Inspection Center, Drug Inspection Center, Disease Prevention and Control Center, Textile Products

Testing centers, hospitals, mask and respirator manufacturers, etc.

Technical indicators:

1. The use of a cold gas aerosol generator produces continuous and stable aerosol particles, making it convenient to add the solution.

2. Using high-precision PM2.5 sensors to measure aerosol concentration.

3. Full process particle leakage prevention design to protect the safety of experimental personnel.

4. Compatible with masks and respirators for testing particle protection effectiveness and filtration efficiency.

5. Two sets of aerosol generators: salt particle aerosol generator and oil particle aerosol generator.

6. Equipped with an aerosol particle electrostatic charge neutralization device.

7. Pneumatic fixture with protective device, safe and convenient to use.

8. Configure temperature and humidity sensors to display real-time environmental temperature and humidity (temperature and humidity requirements: 25 ℃± 5 ℃, 30% RH ± 10% RH).

9. Configure glass rotor flowmeter, vacuum pump, and laser dust particle counter.

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

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

12. Filtering efficiency sampling frequency: 1-9999 times/min can be set arbitrarily.

13. Filtration efficiency: particulate matter concentration: (20-30) mg/m 3; Median diameter of counting: Salt particles (0.075 ± 0.02)

μm、 Oil particles (0.185 ± 0.02) μ m; Geometric standard deviation of particle size distribution: salt particles ≤ 1.86, oil particles

Object ≤ 1.60; Dynamic detection range (0.001-100) mg/m3, accuracy 1%.

14. The front door design of the protective effect testing chamber has good sealing and is equipped with operating gloves for easy replacement of the mask to be inspected.

15. The protective effect test adopts a standard head mold: one standard head mold imitates the real situation of a person wearing a protective mask.

16. Protective effect of aerosol particles: concentration range of test chamber (20-30) mg/m 3, adjustable settings, concentration fluctuation

Less than ± 10%; The aerosol generator generates a particle size distribution of 0.02-2 μ m, with a mass median diameter of 0.6 μ m for salt particles and 0.6 μ m for oil particles

Particle size 0.3 μ m.

17. Protective effect aerosol concentration detection device: gas sampling flow rate (1-2) L/min, sampling frequency: 20 times/min

(1-9999 times/min can be set arbitrarily), dynamic detection (0.001-100) mg/m 3, accuracy 1%.

18. The protective effect is that the inhalation gas sampling tube is located at the lower end of the nostril (inside the oral cavity).

19. The protective effect adopts a respiratory simulator to simulate the human respiratory state.

20. Respiratory simulator: sinusoidal airflow, frequency 20 times/min, respiratory flow control (30 ± 1) L/min, respirator flow

Quantity range: 0-40 L/min.

21. Instrument accuracy level (precision level): Level 1

22. Control system: Computer controls the testing process, automatically collects data, and configures dedicated computers and testing software.

23. Computer automatic testing and display: testing the concentration of the medium in the chamber, the concentration of the inhaled gas medium, and the background concentration; Automatic calculation

Calculation: filtration efficiency, protective effect; Can save, output, query, and print test data.

24. Power supply: AC220V 50Hz

Applicable standards:

GB/T 32610-2016 Technical Specification for Daily Protective Masks 6.13 (Appendix A), 6.14 (Appendix B)

GB 2626-2006 Respiratory protective equipment - Self priming filter particle respirator

GB 19082-2009 Technical Requirements for Medical Disposable Protective Clothing

GB 19083-2010 Technical Requirements for Medical Protective Masks

YY 0469-2011 Medical Surgical Masks

Mask particle protection effect and filtration efficiency tester

1overview

The filtration efficiency detection equipment is mainly used for detecting the filtration efficiency of masks. The equipment refers to the standard YY0469-2011 5.6.2 for particulate matter protection. GB2626-2006。 Can test products such as masks and meltblown fabrics.

2、 Equipment composition

This device consists of a NaCl cargo oil medium generator, an air flow meter, a humidifier, a sealing box, and corresponding pipelines.

Gas source system:

Exhaust volume: 10 ± 100L/M

Solid aerosol particle size: 0.075 ± 0.02um

Concentration: ≤ 200mg/m ³

IIITechnical Parameter

Interface

4Configuration List

5Technical Parameter

Hong Kong Meltblown Fabric Particle Filter Tester Recruits Agents Hong Kong Meltblown Fabric Particle Filter Tester Recruits Agents