8301-AQM1 and 8301-AQM2 Handheld
Air Quality and Environmental Monitor

Indoor Air Quality Monitors

Models 8301-AQM1 and
8301-AQM2 

(CO2, Temp, RH, and TVOC)

The Particles Plus® 8301-AQM1 and 8301-AQM2 Handheld Particle Counters were designed for cleanroom monitoring, indoor air quality, industrial hygiene, research, and health & safety applications. Their patented, feature-rich design enables dynamic environmental monitoring and versatile data reporting across multiple industries.

The 8301-AQMs measure particles from 0.3 to 25 μm in six user-selectable channels at a flow rate of 0.1 CFM (2.83 LPM). They offer data reporting in standard cleanroom formats or by mass concentration in μg/m³, with optional density and refractive index corrections. These user-friendly instruments display up to six particle size channels, temperature, relative humidity, and CO2 (AQM1) or CO2 + TVOC (AQM2).

With unique features like Particles/Second and the Real-Time Meter, the 8000 Series enables efficient, on-the-go particle investigations across nearly any environment. The instruments can also operate as remote particle counters, leveraging intelligent battery and power conservation modes to achieve up to 100 hours of battery life.

The Particles Plus® standardized hardware and firmware simplify maintenance and reduce the total cost of ownership. Combined with extensive remote diagnostics and a lifetime warranty, the 8301-AQMs ensure industry-leading performance and long-term value.

• Stores up to 45,000 sample records, 1,000 sample locations and 50 recipes
• Approximates mass concentration in μg/m³ with density and refractive index corrections
• Large, intuitive color touch screen display with an easy-to-use icon-driven interface
• Resolve issues quickly from any location with internet-enabled remote diagnostics
• Annotation function allows user to save 32 character notations to a live sample record
• Over 10 hours continuous sampling on a single charge
• Integrated handle for one-handed operation
• Common interface ensures ease of use across all products
• Connect using Ethernet, USB, Wi-Fi (optional), RS 485 or RS232
• Displays user-definable reports for ISO 14644-1, EU GMP Annex 1 and FS 209E
•  Built-in visual and audible alarms with comprehensive alarm management
• Complies with ISO 21501-4 and JIS B9921 standards
• Easy to clean and wipe down with minimal particle traps
• Equipped with a standard 1/4”–20 female mount for tripod compatibility
• Lightweight high-impact injection molded plastic enclosure
• 2 year Limited Warranty (Extended and Lifetime warranties available)
Model8301-AQM1 and 8301-AQM2
Size Range0.3 to 25 μm
Size ChannelsFactory calibrated at 0.3, 0.5, 1.0, 2.5, 5.0, 10.0 μm variable binning
Flow rates / Accuracy0.1 CFM (2.83 LPM) 
Aerosol Concentration Range0.01 to 20,000 μg/m³
Light SourceLong life laser diode
Resolution0.00003 μg/m3
Zero StabilityNo appreciable drift
Count ModesParticles/second, Real-Time Meter, cumulative/differential count/m³ and count/ft³, and mass concentration 
Log IntervalMinimum 1 second with no hold time, maximum 99 hours
CalibrationNIST traceable
Display4.3″ (10.9 cm) WQVGA (480×272) color touch screen
Printer(Optional) External thermal printer available
Vacuum SourceInternal pump with automatic flow control
Filtered ExhaustInternal HEPA filter
Number of Channels6
Custom Size ChannelsCalibration for custom size channels available
Audible AlarmAdjustable integrated alarm
Communication ModesEthernet, USB, RS485, RS232, and optional 802.11b/g wireless
Environmental Sensors 8301-AQM1Includes NDIR-CO2 sensor (0-5000 ppm ±1%, resolution 1 ppm, response rate 20 seconds), temperature (32-122°F, ±1°F / 0-50°C, ±0.5°C) and relative humidity probe (15–90% RH, ±2%)
Environmental Sensors 8301-AQM2Includes all sensors in the 8301-AQM1 and PID-TVOC sensor (5 ppb - 50 ppm ±1.5%, response rate <3 seconds)
AlarmAlarms for particle counts (any size channel), sensor failure, environmental sensors, and flow rate
StandardsISO 21501-4 and JIS B9921
Instrument CalibrationRecommended minimum once per year. Gases, temperature and humidity sensors field calibratable.
External SurfaceLightweight high-impact injection molded plastic enclosure
Dimensions (L x W x H)6.33 x 4.25 x 12.26 in (16.1 x 10.8 x 31.1 cm) includes handle and does not include probes
Weight2.5 lb (1.1 kg)
AccessoriesUser manual + Instrument Management Software (IMS) on USB flash drive, isokinetic probe, temperature relative humidity sensor, purge filter, battery, USB cable, and power supply 
Optional AccessoriesPrinted manual, case, spare battery, external battery charger, external printer, barbed fitting, and tubing
Data Storage45,000 sample records (rotating buffer) including particle count data, environmental data, locations, annotations, and times. Scrollable on screen or printout.times. Scrollable on screen or printout
Sample Time1 second to 99 hours
Power110 to 240 VAC 50/60 Hz universal in-line power supply
Operating Conditions41-104ºF (5-40ºC) / 20% to 95% non-condensing
Storage Conditions32-122ºF (0-50ºC) / Up to 98% non-condensing
Warranty2 year Limited Warranty (Extended and Lifetime warranties available)


Handheld
Carrying Case
Part Number: AS-99015


Wireless 802.11 b/g with Output Antenna
Part Number: EE-80092


Battery 55Wh
Rechargeable & Removable
Part Number: EE-80003A


External 55h Battery Charger
(For EE-80003A)
Part Number: AS-99005A


Temperature and Humidity Probe
Part Number: EE-80014A


Filter
0.1 CFM (2.83 LPM)
Part Number: AS-99002


Filter Assembly
0.1 CFM (2.83 LPM)
Part Number: AS-99002A


RS-485/232
Connector (5 POS)
Part Number: EE-79015A


Isoprobe Threaded (Ni Plated Al)
0.1 CFM (2.83 LPM)
Part Number: PS-12041


Isoprobe Threaded (Stainless)
0.1 CFM (2.03 LPM)
Part Number: PS-12070


Isoprobe Barbed (Stainless)
0.1 CFM (2.83 LPM)
Part Number: PS-12022


Inlet Fitting Barbed
1/8 (Stainless)
Part Number: PS-12005


External Thermal Printer
Includes 2 Rolls of Paper
Part Number: AS-99011


Thermal Printer Paper
Single Roll
Part Number: AS-99012


USB Cable
6ft (1.8m)
Part Number: AS-99022


Power Supply
15V ~2A 100-240 VAC
Part Number: EE-80127


Power Supply Connector
USA, Japan, Philippines, Taiwan
Part Number: EE-80128


Power Supply Connector
Europe & Korea
Part Number: EE-80129


Power Supply Connector
UK, Malaysia & Singapore
Part Number. EE-80130


Power Supply Connector
China & Australia
Part Number: EE-80131


Tubing (per foot)
3/8" OD (1/4" ID)
Part Number: AS-99019


Tubing (per foot)
3/8" OD (1/4" ID) Bev-A-Line XX
Part Number: AS-99037


IMS Software & User Manual (USB Key)
Part Number: MN-24001


8000-AQM Series
Validation Manual
Part Number: MN-24002


8000-AQM Series
User Manual (Printed)
Part Number: MN-24001P