Synthetic blood penetration tester for medical protective clothing

I. Conforming to the standards:

Gb19083-2010: Technical requirements for medical protective masks;

YY 0469-2011: Surgical masks;

YY/T0691-2008: Test method for transmittance of medical masks against synthetic blood in protective equipment for infectious Pathogens (fixed volume, horizontal injection);

ISO 22509:2004; F1862/F1862M-2013

ASTM F1671 PHI-X174 Phage penetration as a test system to determine the resistance of protective clothing materials to blood-borne Pathogens penetration;

ASTM F1670 Test Method for Resistance to Human Hematopoietic Infiltration of Protective Clothing Materials;

ASTM F903 Test Method for Resistance to Liquid Permeability of Protective clothing Materials;

ISO 16603:2004 Protective Clothing for the Prevention of contact with blood and body fluids - Determination of the permeability of protective clothing against blood and body fluids - synthetic blood test;

ISO 16604:2004 Protective Clothing against contact with blood and body fluids To determine the resistance of protective clothing materials to blood pathogens using the PHI-X 174 antimicrobial test;

YY/T 0699-2008 Liquid chemical protection Equipment, Protective clothing material, test method for the penetration resistance of pressurized liquid;

YY/T 0689-2008 Blood and body fluid Protective equipment Protective clothing material resistance to blood-borne pathogens penetration test phi-X174 phage test method; YY/T 0700-2008 Blood and body fluid protective equipment Protective clothing material resistance to blood and body fluid penetration test method for synthetic blood;

GB/T 19082-2009 Medical disposable protective clothing technical requirements and other standards.

Two technical parameters

Test environment: Temperature (21±5)℃; Relative humidity (85±10)%

Injection distance: (300±10)mm

Nozzle diameter: Φ 0.84 mm, 12.7 mm long

Liquid injection speed: 450cm/s; 550 cm/s; 635 cm/s

Power supply: AC220V 50Hz

Three main uses

It is suitable for the determination of the penetrability of the protective clothing of medical mask against the spraying of synthetic blood. It can be used by medical inspection departments, safety inspection departments and scientific research units.

Four principles

The medical mask sample was supported on the test device and 2mL of synthetic blood was sprayed horizontally from the sleeve with an inner diameter of 0.84mm at a distance of 300mm to the test mask. Simulate the scene of the mask being splashed by blood from perforated blood vessels, and observe the penetration of synthetic blood on the other side of the mask.

The liquid injection pressure corresponding to the liquid injection velocity of 450cm/s, 550cm /s and 635cm /s was used to test the medical mask samples. The test results of each injection velocity were recorded, and the maximum blood pressure corresponding to the acceptable mass level of the medical mask at 4 was given.

Table 1 Reference pressure gauge relationship with injection time

Reference pressure (kPa) ejection synthetic blood volume (mL) Ejection 2mL liquid Valve Opening time (S)

22.52 0.8

30.520.66

37.520.57

5. Instrument characteristics

The grinding head of this instrument can float freely, the stroke rod can make linear motion, this "free float"

The grinding head can move along the contour of the sample, whether the contour of the sample is curved or flat.

Able to test samples of any size or shape, for both contoured and polished surfaces

Abrasion tests of feature products are ideal (e.g. computer mouse and other computer or IT products plastic)

Wear resistance test of topcoat, commonly used in plastics, automobile parts, rubber, leather and textile, electroplating,

Free disassembly of components, paints, printing patterns and other products.