UNI-T UT337B Professional Laser Particle Counter
High-Precision Airborne Particle Detection with Comprehensive Environmental Monitoring
The UNI-T UT337B is a professional-grade laser particle counter offering synchronized six-channel detection of airborne particles from 0.3μm to 10.0μm. Engineered for precise environmental monitoring applications, its intuitive 3.5" color display provides clear visualization of particle distribution data in real-time. With advanced features including integrated temperature and humidity sensors, WiFi/USB connectivity, built-in camera, and compatibility with industry-standard ISO/EU-GMP classifications, this versatile instrument delivers the reliability needed by environmental engineers, cleanroom technicians, HVAC specialists, and quality control professionals in pharmaceutical, healthcare, electronics manufacturing, and indoor air quality applications.
Key Features
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Six-Channel Particle Detection: Simultaneous measurement of 0.3μm, 0.5μm, 1.0μm, 3.0μm, 5.0μm, and 10.0μm particles
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High Flow Sampling Rate: 2.83L/min (0.1CFM) for rapid and accurate air quality assessment
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3.5" Color LED Display: Clear, high-visibility screen for intuitive data monitoring
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Integrated Environmental Sensors: Measures temperature (-10°C to 50°C), humidity (0.1% to 99.9%), and dew point
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Dual Connectivity: WiFi for wireless monitoring and Type-C USB for direct data transfer
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Built-in Camera: Captures environmental context photos linked to measurement data
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ISO/EU-GMP Classifications: Direct display of compliance with international cleanroom standards
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Extensive Data Storage: Internal memory for 10,000 measurement records
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High Reliability Sampling: Meets ISO 21501-4:2018 standards with particle distribution error ≤±30%
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Multiple Counting Modes: Cumulative and differential concentration/counting options for versatile analysis
Professional-Grade Precision for Demanding Applications
The UNI-T UT337B delivers exceptional measurement accuracy with its advanced laser scattering technology, providing reliable detection across all six particle size channels. With counting efficiency of ≥50% at 0.3μm and 100% at 0.5μm, it offers laboratory-grade precision in a portable instrument. The high-flow sampling system ensures rapid data collection at 2.83L/min (0.1CFM), making it ideal for real-time environmental monitoring applications where quick assessment is essential.
The specialized ISO and GMP measurement modes provide direct compliance evaluation with international standards ISO 14644-1:2015 (Classes ISO 4-9) and EUGMP Annex 1 (Grades A-D), eliminating the need for manual calculations and ensuring consistent classification across different environments. This capability is essential for cleanroom validation, pharmaceutical manufacturing, and other regulated industries where particle monitoring documentation is mandatory.
Comprehensive Monitoring Capabilities
The UT337B combines essential particle counting with integrated environmental monitoring to deliver complete diagnostic capabilities. Beyond standard particle concentration measurements, it offers:
- Temperature monitoring from -10°C to 50°C with ±0.5°C accuracy
- Relative humidity measurement from 0.1% to 99.9% with ±5.0% accuracy
- Dew point calculation from 0°C to 50°C with ±0.5°C accuracy
- Customizable sampling intervals from 5 seconds to 6 hours
- Programmable sampling delays from 5 to 240 seconds
- Maximum particle concentration measurement up to 2,000,000/L
- LED and audio alerts when thresholds are exceeded
- Multiple data viewing options including tabular and trend analysis
The optional integrated camera enables technicians to document environmental context by capturing images that are automatically linked to measurement data, providing valuable visual reference for site investigations, troubleshooting, and compliance documentation.
Smart Connectivity and Data Management
The integrated WiFi connectivity pairs with UNI-T's mobile application, allowing technicians to:
- Monitor measurements remotely in real-time
- Generate comprehensive sampling reports in PDF and CSV formats
- Document particle concentration trends over time
- Export data with synchronized temperature and humidity values
- Share findings with team members instantly
This connectivity transforms the UT337B from a simple measurement tool into a complete environmental monitoring system, enabling professionals to document conditions, analyze trends, and maintain comprehensive records. The Type-C USB interface provides an alternative direct connection for data transfer and power.
Professional Applications
Cleanroom Validation
Cleanroom certification specialists rely on the UT337B's precision and standards compliance for:
- ISO 14644-1 classification verification
- EUGMP Annex 1 pharmaceutical compliance testing
- Routine monitoring and documentation of critical environments
- HEPA filter efficiency testing
- Contamination source identification
Healthcare Facilities
Medical environmental specialists leverage the UT337B's comprehensive monitoring for:
- Operating room air quality validation
- Isolation room pressure differential verification
- Sterile compounding area certification
- Infection control environmental assessment
- HVAC system performance verification
Electronics Manufacturing
Production quality control personnel depend on the UT337B's sensitivity for:
- Semiconductor fabrication environment monitoring
- Hard drive assembly area certification
- Electronics assembly workspace validation
- Research and development lab qualification
- Equipment enclosure environmental assessment
Indoor Air Quality Assessment
Environmental consultants utilize the UT337B for:
- Building occupant health investigations
- HVAC system performance evaluation
- Post-remediation verification
- Airborne contaminant source identification
- Environmental compliance documentation
Technical Specifications
| Measurement |
Range/Specification |
Accuracy/Detail |
| Particle Size |
0.3μm, 0.5μm, 1.0μm, 3.0μm, 5.0μm, 10.0μm (6-Channel) |
ISO 21501-4-2018 Standard |
| Counting Efficiency |
0.3μm ≥ 50%; 0.5μm: 100% |
Reference Standard Calibrated |
| Sampling Flow |
2.83L/min (±5%), 0.1CFM |
Automatic Flow Control |
| Particle Distribution Error |
≤ ±30% (0.5μm and 5.0μm) |
Certified Accuracy |
| Particle Concentration Error |
≤ ±30%FS (0.5μm) |
Full Scale Accuracy |
| Maximum Sampling Concentration |
2,000,000/L |
High Concentration Capability |
| Sampling Time |
5s to 6h |
User Programmable |
| Sampling Points (Location) |
1000 |
Comprehensive Location Tracking |
| Temperature Range |
-10°C to 50°C |
±0.5°C |
| Relative Humidity Range |
0.1% to 99.9% |
±5.0% |
| Dew-Point Temperature Range |
0°C to 50°C |
±0.5°C |
| Data Storage |
10,000 Records |
Non-volatile Memory |
| Working Time |
Approximately 5 hours |
2600mAh Li-ion Battery |
| Working Environment |
0°C to 50°C, 0% to 95% RH |
Non-condensation |
| Safety Standards |
EN61326-1:2021 (Class A), EN60825-1:2014 |
CE, RoHS Certified |
| Product Size |
290×103×62mm |
Handheld Design |
| Product Net Weight |
Approximately 710g |
Portable for Field Use |
Additional Features
- Display Type: 3.5" Color LED screen
- Counting Modes: Cumulative; Differential concentration/counting
- Sampling Delay: 5 to 240 seconds
- Time Interval: 5 to 240 seconds
- Purge Time: ≤10min (Continuous 0 for 2 times in 10 minutes; 95% reliability)
- Built-in Camera: For environmental documentation
- Storage Environment: -30°C to 50°C, 0% to 95% (Non-condensation)
- Multiple Languages: EN, FR, DE, IT, ES, SV, PL, CS
Package Contents
- UNI-T UT337B Laser Particle Counter
- Type-C Cable
- Hand Strap
- Purge Filter
- Sampling Tube
- User Manual
- Calibration Certificate
- Carrying Case
Product Comparison
| Feature |
Basic Particle Counter |
UNI-T UT337B |
Laboratory-Grade Counter |
| Particle Size Channels |
2-3 channels |
6 channels (0.3μm to 10.0μm) |
6+ channels |
| Environmental Sensors |
Limited or None |
Temperature, Humidity, Dew Point |
Multiple integrated sensors |
| Display |
Basic LCD |
3.5" Color LED |
Large touchscreen display |
| Data Storage |
Limited (100-1000 records) |
10,000 records |
10,000+ with external storage |
| Connectivity |
None or USB only |
WiFi and USB |
Multiple wireless protocols |
| Standards Compliance |
Basic |
ISO 21501-4, ISO 14644-1, EU GMP |
Multiple international standards |
| Documentation Features |
Limited |
Built-in camera, multiple export formats |
Advanced reporting system |
| Battery Life |
2-3 hours |
5 hours |
8+ hours |
| Price Point |
Entry-level |
Professional |
Premium |
Frequently Asked Questions
What is the difference between cumulative and differential counting modes?
The UT337B offers two primary counting modes that provide different perspectives on particle concentration. Cumulative mode displays the total count of all particles larger than or equal to each specified size channel (e.g., all particles ≥0.3μm). This provides an overall contamination assessment and is typically used for cleanroom classification according to ISO and GMP standards. Differential mode shows only the particles within each specific size range (e.g., particles between 0.3μm and 0.5μm), which helps identify the distribution profile of contaminants and is valuable for source identification and filter efficiency testing.
How does the UT337B assist with cleanroom compliance verification?
The UT337B features specialized ISO and GMP measurement modes that automatically evaluate particle counts against international standards. The ISO14644-1:2015 mode automatically classifies environments from ISO 4 to ISO 9 based on measured particle concentrations, while the EUGMP-ISO:2015 mode assesses compliance with pharmaceutical Grade A through D specifications in both operational and at-rest states. These built-in evaluation capabilities eliminate manual calculations and potential errors, streamlining the certification process and ensuring consistent classification across different testing locations and timeframes.
What advantages does the integrated environmental monitoring provide?
The UT337B's integrated temperature, humidity, and dew point sensors enable simultaneous monitoring of both particulate and environmental conditions, providing crucial context for particle measurements. This combined data allows technicians to identify correlations between environmental factors and particle concentrations, which is essential for diagnosing HVAC system performance issues, condensation risks, and other environmental factors that may impact air quality. The synchronized data storage ensures that all environmental parameters are documented with each particle measurement, creating a comprehensive record for analysis and compliance documentation.
How does the WiFi connectivity enhance the UT337B's capabilities?
The UT337B's WiFi connectivity transforms the instrument from a standalone measurement device into a networked monitoring system by connecting with the UNI-T mobile application. This connection enables real-time remote monitoring, allowing technicians to observe measurements from a safe distance or from outside cleanroom environments. The application also facilitates comprehensive data management, including trend analysis, report generation in multiple formats (PDF/CSV), and immediate sharing of findings with team members. Additionally, the wireless capability allows for firmware updates and remote configuration, ensuring the instrument maintains optimal performance and the latest features.
Why is the built-in camera important for environmental monitoring?
The UT337B's built-in camera allows technicians to capture visual documentation that is automatically linked to particle measurement data, providing essential context for environmental assessments. This visual reference helps identify potential contamination sources, document sampling locations for consistent testing, and verify proper instrument positioning during measurements. In compliance applications, these images serve as supporting evidence for certification reports and can be crucial for troubleshooting when unusual readings are detected. The photo-linked documentation capability streamlines reporting and provides more comprehensive environmental assessment than particle data alone.
Support and Warranty
UNI-T stands behind the UT337B with comprehensive technical support and a 1-year warranty. Our dedicated support team is available to assist with application questions, measurement techniques, and warranty service.
Professional-Grade Particle Monitoring for Environmental Specialists
The UNI-T UT337B Professional Laser Particle Counter delivers exceptional precision, comprehensive functionality, and specialized features for demanding environmental monitoring applications. With its six-channel detection system, integrated environmental sensors, and advanced connectivity options, it provides reliable performance for professionals who need complete diagnostic capabilities for cleanroom validation, indoor air quality assessment, and environmental compliance monitoring in today's strictly regulated industries.
Order Your UNI-T UT337B Today and Experience Professional-Grade Particle Monitoring Capabilities
