6550 Portable Particle Counter
Model 6550 Portable Airborne
Particle Counter
0.5 – 25 µm @ 50 LPM with long-life internal pump
& battery
The Particles Plus® 6550 Portable Particle Counter is built for cleanroom monitoring and contamination control. Its patented, feature-rich design enables dynamic environmental monitoring and versatile data reporting and communication options. Measuring particles from 0.5 to 25 μm across six channels at 50 LPM, the 6550 is ideal for aseptic fill, routine monitoring, cleanroom and flow bench validation, recovery testing, filter scanning, troubleshooting, and more.
Real-Time Monitoring technology uniquely allows the 6550 to display data in particles per second, enabling users to quickly pinpoint contamination sources and streamline cleanroom investigations. Standardized hardware and firmware across the Particles Plus® platform simplify training, reduce maintenance complexity, and lower the overall cost of ownership.
Designed with long-term performance in mind, the 6550 includes remote diagnostics and is backed by a lifetime warranty, ensuring industry-leading reliability and value. Data can be managed directly on the device or through the free Particles Plus® software, with options to export raw data in .CSV format or generate reports in accordance with ISO 14644-1, EU GMP Annex 1, or FS 209E standards. The 6000 Series can function as a fully portable, battery-operated solution or be easily integrated into building automation and cleanroom management systems with multiple communication options.
| • Long life laser diode technology |
| • Stores up to 45,000 sample records, 1,000 sample locations and 50 recipes |
| • Annotations allow users to save 32 character notations to sample records |
| • Internal and internet-enabled 24/7 remote diagnostics |
| • Large, intuitive touch screen display with an easy-to-use icon-driven interface |
| • Common interface ensures ease of use across all products |
| • Connect using Ethernet, USB, or Wi-Fi (optional) |
| • Built-in printer for FDA 21 CFR Part 11 compliance |
| • Complies with ISO 21501-4 and JIS B9921 standards |
| • Easy to clean 316L stainless steel enclosure with minimal particle traps |
| • Seamless integration into a facility monitoring system |
| • 2 Year Limited Warranty (Extended and Lifetime Warranties available) |
| Model | 6550 |
| Size Range | 0.5 to 25.0 μm |
| Size Channels | Factory calibrated at 0.5, 0.7, 1.0, 2.5, 5.0, 10.0 μm variable binning |
| Flow rates | 50 LPM |
| Concentration Limits | 850,000 particles/ft3 @ 10% coincidence (per ISO 21501-4), |
| 1,700,000 particles/ft3 @ 10% coincidence (as tested and validated1) | |
| Battery Run Time | 4 hrs |
| Light Source | Long life laser diode |
| Counting Efficiency | 50% @ 0.5 μm; 100% for particles >0.75 μm per JIS |
| Zero Count | <1 count per 5 minutes |
| Count Modes | Real-Time Meter and graph, cumulative/differential count/m³and count/ft³, and mass concentration (PM) |
| Count Alarms | 1 to 9,999,999 counts |
| Calibration | NIST traceable |
| Display | 7“ (17.78 cm) capacitive touch screens |
| Printer | Built-in printer |
| Vacuum Source | Internal pump with automatic flow control |
| Filtered Exhaust | Internal HEPA filter |
| Number of Channels | Up to 6 Calibratable Channels |
| Custom Size Channels | Calibration for custom size channels available |
| Audible Alarm | Adjustable built-in alarm |
| Batteries | Removable Li-ion (3) |
| Reports | ISO 14644-1, EU GMP Annex 1, FS 209E |
| Recipes | 50 user-configurable recipes |
| Communication Modes | Ethernet, USB, and optional 802.11b/g wireless |
| Alarm | Alarms on counts for all particle sizes, sensor failure, environmental sensors and flow |
| Standards | ISO 21501-4 and JIS B9921 |
| Calibration | Recommended minimum once per year |
| External Surface | 316L Stainless Steel |
| Dimensions (L x W x H) | 8.33” x 8.11” x 8.5” (21.2 cm x 20.6 cm x 21.6 cm) |
| Weight | 13.3 lbs (6.03 kg) |
| Accessories | Operating manual and IMS software on USB flash drive, thermal printer, isokinetic probe, sample tubing, purge filter, (3) batteries, data download software, USB cable, and power supply |
| Optional Accessories | Printed manual, carrying case, spare battery, external battery charger, barbed fittings, printer paper |
| Buffer Memory | 45,000 sample records (rotating buffer) including particle count data, environmental data, locations, annotations, and times. Scrollable on screen or printout. |
| Sample Locations | Up to 1,000 locations 20 characters long |
| Sample Time | 1 second to 99 hours |
| Power | 110 to 240 VAC 50/60 Hz universal in-line power supply |
| Operating Conditions | 41º to 104ºF (5º to 40ºC) / 20% to 95% non-condensing |
| Storage Conditions | 32º to 122ºF (0º to 50ºC) / Up to 98% non-condensing |
| Warranty | 2 year Limited Warranty (Extended and Lifetime warranties available) |
1Validated by independent analysis see paper available at www.particlesplus.com/aac2022_paper

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7000 Series 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 |
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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 |
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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 |
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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 |
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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 |
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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-24003 | 7000 Series Validation Manual Part Number: MN-MN-24005 |
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7000 Series User Manual (Printed) Part Number: MN-24003P |























