TN-BFE   BFE Test Machine

INTRODUCTION

This system is specially used to detect the percentage of bacterial suspended particles filtered from mask materials. The filtration efficiency of the mask should not be less than 95%.

This system not only conforms to the requirements of medical surgical masks technology YY appendix B in 0469-2011 test method for filter efficiency (BFE) bacteria first b. 1.1.1 test instrument, but also conforms to the American society for test materials ASTM F2100, ASTM F2101, the requirements of the European EN 14683 standard, and innovative improvements were made on the basis of this, with double pneumatic contrast sampling method at the same time, improve the precision of sampling, It is suitable for measuring and testing departments, scientific research institutes, mask manufacturers and other relevant departments to test the performance of mask bacterial filtration efficiency.

FEATURES AND BENEFITS

1.Embedded high-speed industrial microcomputer control, with large industrial level high brightness color touch screen.

2.USB universal interface, support U disk data storage.

3.Front switch type glass door, cabinet with built-in high brightness lighting, easy for test personnel to observe and operate.

4.The inner layer of the cabinet is made of stainless steel. The outer layer is sprayed with plastic and cold-rolled.

5.Negative pressure test system to ensure the safety of operators.

6.Built-in leakage protection switch to protect the safety of operators.

7.Built - in peristaltic pump in the negative pressure cabinet, A, B, six Andersen, peristaltic pump flow can be set.

8.The flow rate of night spray of special microorganism aerosol generator can be set, and the atomization effect is good.

9.Movable feet for easy handling.

TECHNICAL PARAMETER

Parameter	Range	Resolution	Accuracy
Sampling flow of route A	28.3 L/min	0.1 L/min	≤±2.5%
Sampling flow of route B	28.3 L/min	0.1 L/min	≤±2.5%
Spray flow	(8-10) L/min	0.1 L/min	≤±2.5%
Peristaltic pump flow	(0.006～3.0) ml/min	0.001 ml/min	≤±2.5%
Front pressure before flow meter A	(-20～0) kPa	0.01 kPa	≤±2.5%
Front pressure before flow meter B	(-20～0) kPa	0.01 kPa	≤±2.5%
Front pressure before spray slow meter	(0～300) kPa	0.1 kPa	≤±2.5%
Environment temp.	(-40～99) ℃	0.1 ℃	≤±2.5%
Negative chamber pressure	(-90～-120) Pa	0.1 Pa	≤±2.0%
Cabinet negative pressure	(-50～-120) Pa
Data storage capacity	＞100000 groups
Vortex mixer test tube specification and quantity	φ16×150 mm ，8 pcs
Hepa filter characteristics	The filtration efficiency of particles above 0.3 m is ≥99.99%
Median mass diameter of aerosol generator	3.0±0.3μm，Geometric standard deviation ≤1.5
Double six Andersen	Ⅰ level > 7 microns, Ⅱ level 4.7 ~ 7 microns
Diameter of particles  sampling apparatus captured	Ⅲ levle 3.3~4.7μm，Ⅳ level 2.1~3.3μm
Total number of positive quality control sampler particles	2200±500 cfu
Ventilation flow rate of negative pressure cabinet	≥5 m3/min
Dimensions of negative pressure cabinet door	1000×730 mm (W×H)
Host dimension	118×65×130 cm (W×D×H)
Stent size	118×65×60 cm( W×D×H)，adjustable height
Working noise	＜65 dB(A)
Power supply	AC 220V±10%，50 Hz，＜1500 W
Weight	150 kg

STANDARDS

EN 14683 : 2014 Medical face masks-Requirements and test methods, ASTM F2100，ASTM F2101

 

 

 

Our products are all certified by international authority,national metrolog inspection center, won praise from customers all over the world ,including SGS,ITS,BV,TUV Sud,TUV Rheinland,CTI,etc

 

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