Model 804 Handheld Particle Counter

The 804 handheld particle counter is a 4 channel portable particle counter that counts particles 0.3 microns to 10.0 microns – giving you portability and reliability at the lowest price in the industry. Don’t let the size fool you–this unit is completely self-contained with its own internal battery and sample pump, and is programmable, allowing you to choose your particle sizes of interest from seven sizes: 0.3, 0.5, 0.7, 1.0, 2.5, 5.0 or 10.0 microns.


The 804 is simple to operate with only two front-panel buttons and scroll wheel it provides a user friendly, menu driven platform that provides ease in configuration. Unlike other counters that can take up to a minute to deliver results, the 804 incorporates user selectable sampling time up to 1 minute and displays counts in as little as 3 seconds. The unit will take single or continuous samples. The 804 has a self-contained battery pack powers the unit for 30 hours of typical intermittent operation, and for up to 8 hours of continuous use. The included AC charger / adapter operates the counter, even when the battery pack is discharged, and recharges the depleted battery in 2.5 hours. The 804 can also store up to 2500 records for output, Excel formatted output via included single computer software. USB interface provides quick data download and field firmware upgrades.


  • Fast Sampling
  • Simple Operation
  • Selectable sizes with available favorites and (2) sizes displayed.
  • Low cost w/ data logging
  • Self Contained


  • Controlled Environments
  • Indoor Air Quality
  • Process Control
  • HVAC Applications
  • Filter Testing
  • Laboratory Environments
  • Trace Contamination Source
  • QA Programs


Operating Principle
Counts individual particles using scattered laser light.
Particle Size Range: Four Channels : >0.3, >0.5, >0.7, >1.0, >2.5, >5.0, and >10.0 μm (selectable)
Concentration Range: 0 – 3,000,000 particles per cubic foot (105,900 particles/L)
Accuracy: ± 10%, to calibration aerosol
Sensitivity: 0.3 μm
Flow Rate: 0.1 cfm (2.83 lpm)
Sample Time: Adjustable (3-60 seconds)
Status Indicators: Low Battery, Service
Light Source: Laser diode, 30 mW, 780 nm
Power: 7.2V Lithium Ion self-contained battery pack—provides 30 hours of typical intermittent operation, up to 8 hours continuous use
AC Adapter/Charger: AC to DC module intelligent Lithium Ion charger, 100 – 240 VAC to 8.4 VDC @ 1500 mA typical. Charge time 2.5 hours typical
Communications: USB
Certifications: Meets or exceeds CE, ISO, ASTM, and JIS international certifications
Display / Keyboard: 2 line by 16-character LCD / 2-button membrane
Data Memory: 2,500 records
Power Supply / Charger: Yes
Software: Yes
Size: Height: 6.75″ (17.2 cm) Width: 3.75″ (9.5 cm) Thickness: 2.0″ (5.1 cm)
Weight: 1.31 lb (21 oz) (0.60 kg)
Operating Temperature: 0 ̊ C to +50 ̊ C
Storage Temperature: -20 ̊ C to +60 ̊ C
Supplied: Operation Manual AC to DC Converter Module with IEC AC Power Cord NIST Traceable Calibration Certificate USB Cable Software
Optional: Carrying Case (PN 8517) Protective Boot (PN 80450) Zero Filter Kit  (PN 80846) Flow Meter Kit (PN 80530)

Specifications are subject to change at any time