Test items: blood penetration performance test Touch color screen mask blood penetration performance tester (hereinafter referred to as the measurement and control instrument) adopts the latest ARM embedded system, 800X480 large LCD touch control color display, amplifiers, A/D converters and other devices adopt the latest technology, with high precision , High-resolution characteristics, simulating the microcomputer control interface, simple and convenient operation, greatly improving the test efficiency. The performance is stable, the function is complete, the design adopts multiple protection systems (software protection and hardware protection), which is more reliable and safer. The pressure is controlled automatically, the pressurization speed is fast, and the pressure can be automatically stabilized after the pressure is set, and the pressure control accuracy is high. The pressure setting has a step setting function, which is convenient for pressure setting. Digital display of pressure and injection time can be adjusted accurately according to actual conditions. Both the pressure and spray time can be automatically memorized, and can be directly recalled in the next test, which greatly improves the test efficiency. Separately set 0.5S and 1.5S spray buttons for easy adjustment. Main Technical Parameters

Parameter Item	Technical Indicators
Pressure Range	8 -25kPa
Pressure Accuracy	±0.1 kPa
Spray Distance	300±10mm
Jet Port Size	Ø0.84mm
LCD Display Life	About 100,000 hours
Number of Effective Touch Screens	About 50,000 times

Types of Tests Available: (1) 10.7kPa (2) 16.0kPa (3) 21.3kPa (4) Custom Applicable Standards GB/T19083, YY 0469, YY/T0691, ISO 22609, ASTM F1862-17