Overview

Filter material efficiency test bench, suitable for testing 40-99.999% grade mask efficiency test, to test masks according to 

international  standards. The design structure of the entire test bench is compact and light, and in the process of running the 

test, it only needs to  provide appropriate additional power and  compressed air (no water, no oil), which is suitable for 

laboratory, factory and other occasions.

The finished product is fixed on the fixture, and the test air volume corresponds to the required filtering speed. The aerosol generated 

by the aerosol  generator is adjusted, and then the aerosol is neutralized by static electricity, and then uniformly mixed with the filtered 

test air, and then enters the test  area to penetrate the filter material.

To determine the efficiency, a split air flow was drawn upstream and downstream of the mask. Using a photometer, measure the 

concentration of particles  in the sample stream, pass the ratio of upstream and downstream, and then obtain the measured efficiency.

In addition, it is necessary to measure the filter resistance during the test and adjust the control flow.

Standards

GB / T 32610-2016 daily protective mask technical specifications

GB 2626-2006 Respiratory Protective Products-Self-priming Filtering Anti-particulate Respirator

GB 19082-2009 technical requirements for medical disposable protective clothing

GB 19083-2010 technical requirements for medical protective masks

YY 0969-2013 disposable medical masks

YY 0469-2011 surgical masks

ASTM F2100-19 Standard Specification for Performance of Materials Used in Medical Face Masks 

ASTM F-2299 Standard Test Method for Determining the Initial Efficiency of Materials Used in Medical Face Masks to Penetration by 

Particulates Using Latex Spheres 

Main Component

3.1 Aerosol generator

Nacl (KCl) aerosol generator, DEHS aerosol generator

3.2 Photometer

It is mainly used to monitor the concentration of particles in the upstream and 

downstream of the tested  filter material, and to obtain the efficiency of the 

tested filter material.

3.3 Differential pressure sensor

It is mainly used to test the pressure difference (or resistance) of the tested 

filter material under a certain test flow.

3.4 Stainless steel fixture

Mainly used for compacting and sealing the tested filter material

3.5 Extraction fan

It is mainly used to pass the test flow of the filter material. The flow is stable, 

green and energy saving, and the vibration and noise are small.

3.6 Electrical control and software

Equipment circuit control and operation, software calculation and data processing, 

upstream concentration stability judgment, operation control, parameter setting.

Function Description

The test bench mainly tests the filtering efficiency and airflow resistance of filter materials and masks.

Can test GB 2626-2006 mask particulate filtering efficiency

GB / T 32610-2016 particulate matter filtration efficiency filtration efficiency

Filtration efficiency and resistance of GB 19082-2009 GB 19083-2010

YY 0969-2013 YY 0469-2011 particulate filtering efficiency and resistance.

If there is a separate personalization function, it can be customized according to specific needs.

The process of testing filtration efficiency is as follows:

A. Filtration efficiency and airflow resistance test:

4.1 The entire test equipment uses a negative pressure system.

4.2 Air and aerosol enter through the mixing barrel and pass through the mask according to the standard flow rate 

(the mask is sealed by a special clamp)

4.3 Through two particle counters to detect the concentration of the mask upstream and downstream, calculate the 

filtration efficiency. Check the pressuredifference upstream and downstream of the outlet cover with a pressure 

difference meter.

4.4 Achieving the rated flow rate through the suction pump

4.5 Use aerosol generators to produce standard aerosol materials.

4.6 The operation and efficiency and resistance calculation of the equipment are performed by PLC and display screen.

Technical Parameters

5.1 Test efficiency range

0-99.999%

5.2 Test area

According to customer's mask shape

5.3 Test pressure difference range

0-1000pa (± 1% FS)

5.4 Test flow of tested filter material

25-100L / min ± 2.5% (adjustable)

5.5 Test aerosol type

Nacl.DEHS

5.6 Photometer measurement range

1ug / m3-200mg / m3 sensitivity: 1ug / m3 (Suxin patent)

5.7 Imported air pump

Continuous working stability

5.8 Data memory capacity

1-1000 sets of measurement data can be exported

5.9 Screen display

Color 7 inch touch screen

5.10 Printing method

Built-in thermal printer

5.11 Power

AC 220V / 50Hz

5.12 Power

1kw

5.13 Data export interface

USB

5.14 Environment

Use environment: 0-40 ℃ relative humidity 10-70%

Storage environment: 0 ℃ -45 ℃ Relative humidity 0-70%

5.15 Standard accessories

Thermal printing paper, hose (outer diameter 6mm and 15mm), instruction manual,

test report, certificate of conformity.

5.16 Dimensions

L900X W 850X H 1600 (mm) (estimated)

5.17 Material

Shell steel plate paint, test parts SUS304 stainless steel

5.18 Weight

150Kg

5.19 Warranty

1 year

5.20 Standard

GB32610-2016, GB2626

5.21 Nacl Aerosol Generator

5.22 DEHS Aerosol Generator

5.23 Set of standard mask clamps