The world's smallest multi-scale nanoparticle detector, using dual non-contact detection levels, not only measures lung deposition surface area (LDSA), but also measures particle number concentration and average particle size. In addition, the surface and mass concentration of ultrafine particles (UFP) were calculated and displayed. The unique feature of this instrument is that the mass of ultrafine particles (UFP) is displayed online and calculated based on the measured particle diameter, rather than estimated through a simple multiplier of LDSA.

Compared with traditional nanoparticle detectors such as handheld condensed nucleus particle counters, there are 7 main advantages:
Multiple meaningful indicators
Small and lightweight
Accessibility measurement
Quick start time
Directed independent operation
Wide particle concentration range
Long battery life

Simultaneously measure and display 5 indicators online: lung deposition surface area (LDSA), particle count, average particle size, surface area, ultrafine particle (UFP) mass (PM0.3)
• High time resolution: 1 second
• Lung Deposition Surface Area (LDSA) concentration range: 0-12000 square micrometers per cubic centimeter
Quantity concentration range: 0-100000 per cubic centimeter
• Average particle size range: 10-300 nanometers
Surface area concentration range: 0-50 000 square micrometers per cubic centimeter
Ultra fine particle (UFP) mass range (PM0.3): 0-2500 micrograms per cubic meter
• Average accuracy: 30%
• Size: 142x88x34mm
• Weight: 450 grams
Built in rechargeable lithium-ion battery, typically running for 24 hours in new devices
Data is stored on a μ SD card (enough space to store data for many years!)
• Graphic display
High concentration alarm with adjustable threshold
• Includes Java data analysis tools running on all major operating systems

Customizable - for special purposes
Solar panel powered air quality monitoring station
Additional data output serial port
External pump can maintain 24 hours/7 days, or higher flow rate and time resolution

measuring principle
By using corona discharge, the particles entering the instrument are charged, and then the magnitude of the current is measured to reflect the surface area of the particles. There is no filter membrane for collecting particles inside, and the instrument can automatically perform zero calibration.

application
Personal exposure monitoring - for research on occupational safety and health: capable of measuring all nanoparticles, monitoring exposure to industrial nanoparticles, tobacco smoke in the environment, welding smoke, traffic nanoparticles, etc
Work environment monitoring - can monitor the level of nanoparticles in the laboratory and nanoparticle production equipment 24 hours/7 days, and can set alarm thresholds
Environmental monitoring - small in size, lightweight, and affordable, suitable for high spatial resolution monitoring. Multiple devices can be used simultaneously to measure the migration phenomenon and concentration distribution of particulate matter. Combined with GPS data, intuitive maps can be created on Google Earth
Airborne measurement - currently the lightest nanoscale measuring instrument that can be placed on small balloons, Zeppelin spacecraft, or quadcopters for airborne nanoparticle concentration measurement