Masks Bacterial Filtration Efficiency (BFE) Tester | YY 0469 / ASTM F2100 / BS EN 14683

The Medical Masks Bacterial Filtration Efficiency Tester, also known as a BFE Test Machine, is designed to evaluate the bacterial filtration efficiency of medical face mask materials. By comparing the bacterial concentration upstream and downstream of the mask material, it accurately measures the mask’s ability to filter airborne bacteria. This instrument is essential for quality control, research, and compliance testing in the medical and protective mask industry.

Applications

The BFE Tester is suitable for:

Mask manufacturers and production quality control

Metrology verification departments

Scientific research institutes and laboratories

Regulatory and certification bodies testing medical mask performance

It is specifically used for evaluating the bacterial filtration efficiency (BFE) of surgical masks, medical face masks, and other protective mask materials.

Standards Compliant

YY 0469-2004 – Technical requirements for surgical masks

BS EN 14683-2014 – Medical face masks: Requirements and test methods

ASTM F2100-2019 – Standard specification for materials used in medical face masks

ASTM F2101 – Standard test method for evaluating bacterial filtration efficiency (BFE) of medical face mask materials using Staphylococcus aureus biological aerosol

Compliance with these standards ensures reliable quality assessment for regulatory approvals and production control.

Key Features

Professional Negative Pressure Biological Safety Cabinet – Ensures operator and environmental safety

High Negative Pressure Working Cabin – Equipped with two-stage high-efficiency filtration for 100% safe discharge

Two-Way Six-Level Andersen Sampler – Provides precise particle size sampling across six ranges

Adjustable Peristaltic Pump – Controls the flow rate of bacterial suspension for consistent aerosol generation

Special Microbial Aerosol Generator – Adjustable spray flow with uniform atomization

Industrial-Grade Large Touch Screen – 10-inch color screen, PLC + LabView control, USB data transfer

Built-In LED Lighting & UV Disinfection – Enhances operation visibility and safety

Sealed Glass Front Door – Convenient operation and sample observation

Software Integration – Can be controlled via computer and connected to Laboratory Information Management Systems (LIMS)

Technical Parameters

Parameter	Specification
Sampling Flow Rate (Path A)	28.3 L/min
Sampling Flow Rate (Path B)	28.3 L/min
Nebulization Flow Rate	8–10 L/min
Peristaltic Pump Flow Rate	0.006–3 mL/min
Negative Pressure (Aerosol Chamber)	-90 to -120 Pa
Negative Pressure (Cabinet Body)	-50 to -200 Pa
Andersen Sampler Stages	I >7 μm, II 4.7–7 μm, III 3.3–4.7 μm, IV 2.1–3.3 μm, V 1.1–2.1 μm, VI 0.6–1.1 μm
Glass Aerosol Chamber Size	L600 × Ø85 × 3 mm
Outer Dimensions	1180 × 650 × 1300 mm (L×W×H)
Power Supply	AC 220V, 50 Hz

FAQ

1. What is a BFE Tester?

It is an instrument used to measure the bacterial filtration efficiency of medical masks by comparing upstream and downstream bacterial concentrations.

2. Why is BFE testing important?

BFE testing ensures that medical masks can effectively block bacteria, meeting international quality and safety standards for healthcare protection.

3. What types of masks can be tested?

Surgical masks, medical face masks, and other protective masks made from nonwoven or composite materials.

4. How does the test work?

A bacterial aerosol is generated and passed through the mask material. The downstream bacteria are collected using an Andersen six-stage sampler, and the filtration efficiency is calculated.

5. Which standards does the tester comply with?

YY 0469-2004, BS EN 14683-2014, ASTM F2100-2019, ASTM F2101.

2025-12-08 17:53