Wideband Integrated Bioaerosol Sensor

The WIBS-5 is the world’s only instrument for real-time, single particle measurement of atmospheric bacteria, molds, pollen, and other bioaerosols. WIBS-5 measures fluorescence to infer the presence of biological material in particles and provides detailed data on size, relative measure of shape, and fluorescent properties to enable classification of pollen, bacteria, and fungi.


Measure trace amounts of mold and other bioaerosols in the atmosphere.

Get an instrument optimized for detection of bioaerosols, tryptophan, and NADH using two excitation wavelengths and two emission bands.

Get specific data for particles from 0.5 to 30 µm, as well as particle time-of-flight to detect coincidence; configurable to measure larger particles such as pollens and fungal spores.

Enables selection of filter criteria for both full and partial measurements. Filter data using a wide variety of criteria: particle size, asymmetry, and concentration; fluorescent excitation and emission; or ratios of any of these parameters.

Measure particles in real time and see housekeeping parameters to monitor instrument health and enhance operational uptime.

Get more flexibility for your different research applications. Collect measurements and data on the ground or in the air.

Particle light-scattering and fluorescence detection

  • Particles are excited by 280 nm and 370 nm flashlamps.
  • Forward-scattered light from a 635 nm diode laser determines particle size and asphericity.
  • Two emission bands give a detailed excitation-emission matrix which is highly sensitive to common fluorophores such as tryptophan and NADH.
Maximum Concentration 466 particles/cm3 for fluorescent particle counting (10% coincidence) 9,500 particles/cm3 for sizing and counting (10% coincidence)
Fluorescence Excitation 280 nm, 370 nm
Fluorescence Emission 310-400 nm, 420-650 nm
Flow Rate Sample: 0.3 L/min
Particle Size Range 0.5 to 30 µm
Sheath 2.1 L/min
Power Reqiurements 100W, 90-230 VAC or 24 VDC at 3.0A
Weight 27.5 lbs
Dimensions 17.75"W x 14.25"L x 9.5"H (add 2" for inlet at top)

The Lifecycle Care Program ensures WIBS-5 integrity and performance vital to your research mission for 3 years or 3 calls (whichever comes first). When conducting complex and time intensive laboratory or field measurements it is critical to avoid down time, and ensure data collection accuracy. The program consists of 3 key deliverables for each year or call:

  • Instrument Logistics
  • Instrument Integrity
  • Instrument Performance

Lifecycle Care Program Includes:


  • Shipping to and from Droplet Measurement Technologies facility
  • Customs handling, including CARNET ATA if required


  • Incoming instrument evaluation and health check


  • Software and firmware validation
  • 100%-unit functionality test
  • Calibration data
  • Calibration report
  • Certificate of calibration

At times, our technician might discover an instrument issue, which might not be covered by the Lifecycle Care Program or by our product warranty. In such case we will reach out to you with a service & repair estimate to allow you to provide us with the next steps of action.