Controlled Environments/Cleanrooms
« Controlled Environments/Cleanrooms Model 804 Handheld Particle Counter

Model 804 Handheld Particle Counter

Met One Instruments’ 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 very competitive pricing. Though compact, this unit is completely self-contained with its own internal battery and sample pump. The unit is configurable, 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, using only two front-panel buttons and scroll wheel to control a user friendly, menu driven platform for easy configuration. Unlike other counters that can take up to a minute to deliver results, the 804 incorporates user selectable sampling times up to 1 minute and displays counts in as little as 3 seconds. The unit will take single or continuous samples. A self-contained battery pack powers the unit for 30 hours of typical intermittent operation, and 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 as Excel formatted output via included COMET software. A USB interface provides quick data download and firmware upgrades.


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


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


Operation Manual
AC to DC Converter Module with IEC AC Power Cord
NIST Traceable Calibration Certificate
USB Cable
COMET Software


Carrying Case (P/N 8517)
Protective Boot (P/N 80450)
Zero Filter Kit (P/N 80846)
Flow Meter Kit (P/N 80530)
ISO 21501-4 Cal (P/N 80849)
Particle View Software (P/N Particle View)

Specifications are subject to change at any time

1800 Washington Bivd

Grants Pass, OR 97526

Phone: 541-471-7111

Fax: 541-471-7116



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