Therefore, the tightness test of dust mask is a necessary link to evaluate dust mask. When consumers buy dust mask every day, they should consider the performance of products comprehensively, so as to effectively play the role of dust mask.
The fitting degree of mask is usually expressed by the total leakage rate, that is, under the test conditions specified by the laboratory, the percentage ratio of the simulated agent concentration leaked into the mask from all mask components including filter elements to the simulated agent concentration in the inhaled air when the subject inhales, and the lower the total leakage rate, the higher the fitting degree.
Protective Mask Leakage Tester Main parameters:
01. Concentration range: 0~100,000 PCs/cm3;
02. Particle size: 0.02 ~ 1.0μ m;
03. Flow rate: sampling flow rate: 100cm3/min, total flow rate: 700cm3/min；;
04. the range of tightness coefficient: greater than 10,000, 1-200(N95 type);
05. Accuracy of tightness coefficient: 10%;
06. tightness coefficient test: direct test (cout/CIN);
07. Temperature range: 15 ~ 35℃;
08. Working time: 6 hours, 21℃ (70 F);
09. Alcohol type: 99.5%+ isopropanol (analytically pure);
10. Power supply: AC110~240V, 50/60Hz.
Respirator Fit Test Machine Technical features:
1, simple operation and convenient use;
2. Independent operation type, without external connection to the computer;
3. Optional mask sampling adapter, allowing the tightness test of various masks;
4. The color touch screen can be operated by fingers or pens;
5. FitPro+TM tightness test software can automatically complete the test;
6. Use an external computer to generate a report and print a test card for tightness;
7. Use microscopic particles in the ambient air to calculate the mask fit factor;
8. Provide interactive training tools for initial and follow-up training.