Product Details

Face Mask filter particulate test machine with filter efficiency test

1. This device is used for performance testing of filter elements, disposable masks, filter media, etc. of respiratory protection products, and is suitable for the safety testing of such products, basic filtering performance evaluation, and new product development guidance. 2. The instrument is also suitable for performance verification of new product development, quality control of production departments, third-party testing agencies, product performance verification laboratories, quality and technical supervision departments, etc.

Executive standard

NIOSH 42 CFR Part 84 Respiratory protective device EN 134 Respiratory protective devices. Particulate filters. Requirements, inspection and marking JMOL Japanese standard for protective masks GB2626 Self-suction filter anti-particulate respirator GB / T 32610-2016 Technical Specification for Daily Protective Masks 6.13 (Appendix A) GB 2626-2006 Respiratory protective equipment-Self-priming filter type anti-particulate respirator GB 19082-2009 Technical requirements for medical disposable protective clothing GB 19083-2010 Technical requirements for medical protective masks GB 24539-2009 protective clothing general technical requirements for chemical protective clothing YY 0469-2011 medical surgical mask

Equipment model	BND-3305B
Control mode	automatic
Sample flow rate	10-100L / min
Sample clamping	pneumatic clamping
Particle counter	0.3-1.0μm / 0.1-0.5μm / 0.1-1.0μm / 1.0-10.0μm / 10.0-100μm
Test solution	DEHS, PAO, Paraffin Oil, Dust or others
Differential pressure	2000Pa ± 1% FS
Power	AC220V,50Hz
Test period	30s or other
Cross section of filter material	multiple / according to application requirements
Sensors	temperature sensor, relative humidity sensor, atmospheric pressure sensor
Dimensions (L x W x H)	900mm × 850mm × 1650mm

Test principle: This equipment sprays the pre-prepared NaCl solution or DEHS / PAO and other similar solutions from the aerosol generator through clean compressed air. After passing through a classifier (inertia principle), the large particles that are not needed are collected into the collection bottle. Aerosol particles that meet the requirements are ejected from the nozzle of the aerosol generator into the test system. 1. The aerosol emitted by the aerosol generator needs to be processed twice before reaching the test filter; ① Produce aerosol salt particles by mixing with heated gas (for salt mist). ② The static electricity carried by the aerosol is neutralized by an electrostatic neutralizer. This action is to reduce the loss of particles and the influence of static electricity on the test results. 2. After being processed by the above two procedures, the aerosol reaches the surface of the test filter material at a certain flow rate (flow rate) and begins the test procedure. For the filtration efficiency test, the test time is very short, and it takes only a few seconds to complete the Test of filter material. For the loading experiment, the test experiment is relatively long. The particle concentration or the mass concentration of the aerosol upstream and downstream of the filter material is measured by a particle counter or a laser scattering photometer, and the filtration efficiency is calculated. Conduct monitoring.

Instrument characteristics:

1. Intelligent touch screen control + test report printing PLC control system, more efficient and reliable, programmable 7-inch color LCD touch screen, to achieve control, monitoring, calculation, data display and other functions. 2. A variety of test fixtures The instrument has a variety of test fixtures that can test different types of masks 3. High degree of automation The equipment is designed as a dual-control pneumatic clamping method, which is easy to operate and has high safety. 4. Powerful built-in equipment The device can test penetration efficiency, penetration resistance and flow rate. At the same time, the flow pressure difference of the device can be set arbitrarily, satisfying a variety of experiments, stable performance, and good repeatability of test data.