Scope of Application

【Operating Instructions】

Used for determining the particle fit (suitability) test of masks.

**YS-388B Mask Fit Tester**

**【Scope of Application】**  

Used for determining the particle fit (suitability) test of masks.

**【Applicable Standards】**  

The instrument at least complies with the following execution standards: GB19083-2010 Technical requirements for medical protective masks — Appendix B, etc.

**【Instrument Features】**  

1. Adopts a well-known brand high-precision laser counter sensor to ensure accurate, stable, fast, and effective sampling.  

2. Uses multifunctional software control, automatically obtains results, provides precise measurement, and has powerful database functions.  

3. Strong data storage capability; data can be imported/exported to a computer (data to be printed or exported can be arbitrarily selected based on actual needs).  

4. Lightweight and portable, allowing measurements to be taken in different locations.

**【Technical Parameters】**  

1. **Concentration range:** 0–100,000 particles/cm³  

2. **Total flow rate:** 700 cm³/min  

3. **Sampling flow rate:** 7,100 cm³/min  

4. **Fit factor test:** Direct test  

5. **Test results:** Automatically stored  

6. **Maximum allowable sampling concentration:** 35,000 particles/L  

7. **Light source and lifespan:** Semiconductor laser (lifespan >30,000 hours)  

8. **Operating environmental conditions:** Temperature 10°C–35°C, humidity 20%–75%  

9. **Atmospheric pressure:** 86 kPa–106 kPa  

10. **Power supply requirements:** 220 V, 50 Hz  

11. **External dimensions (L × W × H):** 212 × 280 × 180 mm  

12. **Product weight:** Approximately 5 kg  

13. **Operating interface:** Smart touch screen, Simplified Chinese  

14. **Particle size range:** 0.02–1.0 μm  

15. **Communication modes:** USB, Ethernet, Wi-Fi  

16. **Housing material:** Stainless steel