Controlled Environments/Cleanrooms
« Controlled Environments/Cleanrooms GT-324 Handheld Particle Counter

GT-324 Handheld Particle Counter

Met One Instruments, Inc.’s Model GT-324 particle counter is a full-featured handheld particle counter that provides the functionality of a bench unit in a portable package. A fully integrated RH/Temp sensor immediately provides data to your displayed and logged data. A convenient unit for compliance, the user interface is simple with the multifunction rotary dial. Comply with 21 CFR Part 11 using the password feature to prevent unauthorized changes to user settings. Unit is 21501-4 compliant capable. All new units include an NIST traceable certificate of calibration and the upgraded Particle View software package. Particle View now features additional reports, alarms, charts and conversions for improved data analysis. The 324 has seven selectable sizes; 0.3, 0.5, 0.7, 1.0, 2.5, 5.0 and 10.0 microns of which the operator can choose any 4 of the particle sizes of interest. The GT-324 is suitable for many applications, including but not limited to, Cleanroom Monitoring, Controlled Environments, Filter Testing, Compliance Testing, Process Control, Indoor Air Quality, HVAC Applications, QA Programs, etc.
GT-324 Handheld Particle Counter


The GT-324 features a simple user interface via a single multifunction rotary dial. User setting can be password protected. The self-contained battery pack powers the unit for 11 hours of continuous operation. The included AC adapter/charger operates the 324, even when the battery pack is discharged, and recharges the depleted battery in 2.5 hours.


  • Select Between Seven Particle Sizes – >0.3, >0.5, >0.7, >1.0, >2.5, >5.0 & >10 Microns
  • 2200 Stored Data Samples
  • Integrated Temperature & Relative Humidity Sensor
  • Handheld Unit – Simple Operation
  • Fast Sampling
  • Battery & AC Powered
  • 1-Year Warranty


  • Controlled Environments
  • Indoor Air Quality
  • Process Control
  • HVAC Applications
  • Filter Testing
  • Compliance Testing
  • Emission Sourcing
  • QA Programs


Carrying Case
User Manual
USB Cable
Particle View Software
AC Adapter / Battery Charger
Iso-kinetic Sample Probe
Zero Particulate Filter
NIST Certificate of Calibration


Flow Meter (P/N 9801)
ISO Cal 21501-4 (P/N 80849)

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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