The Hach MET ONE 3400 Series Airborne Particle Counter is a benchtop cleanroom particle-counting instrument designed to measure and size airborne particulate matter for environmental monitoring and contamination-control applications. The photographed instrument carries the Hach MET ONE branding and the characteristic touchscreen interface and integrated thermal printer of the MET ONE 3400 series.

The MET ONE 3400 series uses a laser-diode optical particle detection system. Airborne particles pass through the laser beam and scatter light onto a photodetector; the resulting pulse is analyzed to determine particle size and count. The system can display particle results in cumulative or differential counting modes.

The MET ONE 3400 family was offered in several configurations, including models 3413, 3415, 3423, 3425 and 3445, with different flow rates and minimum particle-size channels. Because the exact suffix/model number is not clearly readable in the photograph, this listing identifies the unit conservatively as a MET ONE 3400 Series particle counter rather than assigning an unverified individual model.

Applications

The MET ONE 3400 Series is designed primarily for cleanroom environmental monitoring, where airborne particle concentration and particle-size distribution are important indicators of contamination control. It can be used in pharmaceutical manufacturing, biotechnology laboratories, semiconductor and electronics manufacturing, medical-device production and other controlled environments.

The instrument supports configurable sampling, count cycles, locations and groups, allowing particle measurements to be organized for routine cleanroom monitoring programs. Its built-in printer can produce hard-copy measurement records, while stored historical data can be reviewed, printed or exported.

Main Features

• Hach MET ONE 3400 Series airborne particle counter
• Laser-diode optical particle detection
• Measures and sizes airborne particles
• Color TFT touchscreen interface
• Integrated thermal printer
• Cumulative and differential particle-counting modes
• Programmable sample, hold and delay times
• Automatic counting cycles
• Historical measurement data storage
• Built-in diagnostics and calibration information
• Ethernet, USB and serial communication options depending configuration

Technical Specifications

Hach documentation specifies the principal 3400 configurations as follows: 3413/3415 — 28.3 L/min (1 CFM); 3423/3425 — 50 L/min (1.77 CFM); and 3445 — 100 L/min (3.53 CFM). The minimum particle-size channel varies from 0.3 to 0.5 µm depending on the model.

The documented MET ONE 3400 Series supports particle-size channels such as 0.3, 0.5, 1.0, 2.0, 3.0, 5.0 and 10.0 µm, with the exact channel configuration dependent on the individual model. Hach also specifies up to 5,000 stored samples, programmable count cycles and multiple communication interfaces.

Benefits of Refurbished Laboratory Equipment

A refurbished Hach MET ONE 3400 particle counter can provide laboratories and controlled-environment facilities with established airborne particle-monitoring technology without requiring the purchase of a new instrument. The touchscreen interface, programmable sampling functions and integrated printer are useful for maintaining organized environmental-monitoring records.

Refurbished particle counters can be particularly useful for pharmaceutical, biotechnology, healthcare, semiconductor and research facilities that operate compatible cleanroom monitoring programs. Before routine compliance or qualification use, the instrument should be professionally inspected and calibrated, including verification of flow rate, particle-counting efficiency, zero-count performance and particle-size classification.

Additional Information

The photographed instrument is a used/refurbished Hach MET ONE 3400 Series particle counter and shows visible cosmetic wear consistent with previous laboratory use. The exact model suffix, flow-rate configuration, particle-size channels, calibration date, battery condition and supplied sampling accessories cannot be confirmed from the photograph.

The MET ONE 3400 family includes multiple configurations, so specifications such as flow rate and minimum detectable particle size must be matched to the actual model number before purchase. Hach documentation also identifies the built-in printer, historical-data functions and diagnostics as part of the 3400-series operating system.

• Hach
• Hach MET ONE Particle Counters
• Hach MET ONE 3400 Series Documentation
• NCBI

Refurbished Condition

This is a refurbished Hach MET ONE 3400 Series Airborne Particle Counter. The instrument has been professionally inspected and tested. Reagents, accessories, software and consumables may vary depending on availability.