Moisture resistant microbial penetration tester

Synthetic blood penetration tester for medical protective clothing

1. Meeting the standards:

GB 19083-2010: technical requirements for medical protective masks;

YY 0469-2011: medical surgical mask;

YY / t0691-2008: Test Method for anti synthetic blood penetration of medical masks for infectious pathogen protective equipment (fixed volume, horizontal spray);

ISO 22509:2004;F1862/F1862M-2013

Phage penetration of ASTM F1671 Phi-X174 was used as a test system to determine the resistance of protective clothing materials against blood borne pathogens;

ASTM F1670 test method for anti hematopoiesis penetration of protective clothing materials;

ASTM F903 test method for resistance to liquid penetration of protective clothing materials;

ISO 16603:2004 protective clothing for protection against contact with blood and body fluids - synthetic blood test method for determining the impermeability of protective clothing to blood and body fluids;

ISO 16604:2004 protective clothing against contact with blood and body fluids to determine the impermeability of protective clothing materials against blood pathogens using the phi-x 174 antibiotic test method;

YY / T 0699-2008 liquid chemical protective equipment protective clothing material pressure resistance liquid penetration test method;

YY / T 0689-2008 blood and body fluid protective equipment protective clothing material anti blood transmission pathogen penetration performance test Phi-X174 phage test method; YY / T 0700-2008 blood and body fluid protective equipment protective clothing material anti blood and body fluid penetration performance test synthetic blood test method;

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

2、 Technical parameters of synthetic blood penetration tester for medical protective clothing

Test environment: temperature (21 ± 5) ℃; relative humidity (85 ± 10)%

Spray distance: (300 ± 10) mm

Nozzle diameter: Φ 0.84mm, length 12.7mm

Liquid jet velocity: 450cm / S; 550 cm / S; 635 cm / s

Power supply: AC220 V, 50 Hz

3、 Main uses

It is suitable for the measurement of penetration performance of medical mask protective clothing against synthetic blood splashing. It can be used by medical inspection department, safety inspection department and scientific research unit.

4、 Principle

The medical mask sample is supported on the test device, and 2ml of synthetic blood is sprayed horizontally from the cannula with inner diameter of 0.84mm to the mask to be tested at a distance of 300 mm. Simulate the scene that the mask is splashed by blood from the perforated blood vessel, and observe the penetration of synthetic blood on the other side of the mask.

The medical mask samples were tested with the liquid jet velocity of 450 cm / s, 550 cm / s and 635 cm / s. The test results of each jet velocity were recorded, and the Zuigao blood pressure corresponding to the acceptable quality level limit of medical mask was 4.

Table 1 Relationship between pressure of reference pressure gauge and injection time

Reference pressure (kPa) injection volume of synthetic blood (ML) injection of 2ml liquid valve opening time (s)

22.52 0.8

30.520.66

37.520.57

5、 Instrument features

The grinding head of this instrument can float freely and the stroke rod can move linearly

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

It can be used to test samples of any size, size or shape

Wear test of characteristic products is ideal (e.g. computer mouse and other computer or it products plastic

Wear resistance test of topcoat), commonly used in plastics, automotive accessories, rubber, leather and textile, electroplating

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