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Met One Instruments Inc. – The Standard in Precision Air Quality Environmental Monitoring

Environmental Monitoring is a vital component in the practice of environmental impact assessments for communities and governments.

Many modern societal activities carry a risk of detrimental effects to air quality worldwide. For more than 35 years, Met One Instruments’ precision air quality and meteorological sensors have enabled scientists to acquire vital data and environmental parameters to forecast trends and establish models to mitigate these effects. 

These assessments are supported by measurements collected with our instrumentation, assisting critical decisions that impact the population worldwide – from government policy to scientific study findings.

Met One Instruments Powered by Acoem provides the industry standard in precision ambient air monitors and meteorological sensors. These sensors may be configured into systems for environmental consultants, integrators, or engineering firms. To meet regulatory compliance across the globe, many of our clients work within chemical industries, petroleum refineries, mining, milling operations, landfills, agriculture, and federal waste facilities. 

We make monitoring air quality manageable by providing rugged and reliable sensors, monitors, samplers, systems, communications, and data handling solutions. Contact one of our Sales Representatives for more information!  SALES@metone.com

SASS View South

Pictured here is Met One’s SASS Speciation Sampler deployed for pesticide sampling.

Environmental Monitoring Products:

  • BAM 1020 Beta Attenuation Mass Monitor

    The BAM 1020 from Met One Instruments Powered by Acoem is a continuous particulate monitor which automatically measures and records airborne particulate concentration levels (in milligrams or micrograms per cubic meter) using the industry-proven principle of beta ray attenuation. Thousands...

  • BAM 1022 PLUS Beta Attenuation Mass Monitor

    Our new BAM 1022 PLUS is the most sensitive Beta Attenuation Mass Monitor ever made! The BAM 1022 PLUS is a real-time portable EPA Class III FEM beta attenuation mass monitor which continuously measures the mass concentration of ambient particulate...

  • BAM 1022 Beta Attenuation Mass Monitor

    The BAM 1022 Real-Time Portable Beta Attenuation Mass Monitor from Met One Instruments Powered by Acoem continuously measures the mass concentration of ambient particulate matter collected onto filter tape with a time resolution of one minute. The BAM-1022 employs an...

  • E-BAM - Met One Instruments

    E-BAM Environmental Beta Attenuation Mass Monitor

    The E-BAM from Met One Instruments Powered by Acoem is in a class of its own as a portable, real-time beta gauge comparable to U.S. EPA methods for PM2.5 and PM10 particulate measurements. The E-BAM has been built to satisfy users,...

  • E-BAM Plus - Met One Instruments

    E-BAM PLUS Environmental Beta Attenuation Mass Monitor

    The E-BAM Plus from Met One Instruments Powered by Acoem is a portable, real-time beta gauge which has EPA Approval for PM10 particulate measurements. The E-BAM Plus will satisfy users, regulators, and those from the health community by providing truly...

  • Swift 25.0

    Swift 25.0 Flow Calibrator

    The Swift 25.0 is a multi-function, truly portable flow calibrator. Specifically designed to audit and calibrate flow, pressure, and temperature of our higher flow rate ambient air sampling and monitoring instruments. Flow accuracy is NIST traceable. Features: This user-friendly calibration...

  • Swift 6.0 Air Flow Meter

    The Swift 6.0 is a multi-function Air Flow Meter specifically designed for accurate low rate measurements. The device’s easy-to-read display shows flow rate, flow temperature, and ambient pressure. Flow measurements are traceable to our NIST standard and certification is provided...

  • ES-808 SCAMP System Contamination and Meteorological Platform

    Introducing the ES-808 SCAMP (System Contamination and Meteorological Platform) from Met One Instruments Powered by Acoem. Met One Instruments Powered by Acoem is a global leader in Ambient Air Quality and Meteorological instrumentation.  We recognize the critical need to provide...

  • BC 1054 Black Carbon Analyzer

    The BC 1054 Multi-spectrum Black Carbon Analyzer from Met One Instruments Powered by Acoem continuously measures the transmittance of light across filter media onto which particulate matter is accumulating and in real-time calculates the black-carbon “BC” concentrations at 10 different...

  • BC-1060 - Met One Instruments

    BC 1060 & BC 1065 Portable Black Carbon Monitor

    The BC 1060 and BC 1065 2-Channel Black Carbon Monitors from Met One Instruments Powered by Acoem measure and report aerosol brown and black carbon concentrations, with user-selectable time resolution down to one minute, at both UV (370 nm) and...

  • SASS and SuperSASS Speciation Sampler

    The SASS and SuperSASS Speciation Samplers from Met One Instruments Powered by Acoem are designed to comply with and exceed EPA Speciation requirements. Two models provide a choice for compliance monitoring: SASS, a 5 channel sampling system; and SuperSASS, an...

  • ES-405

    ES-405 Simultaneous Particulate Profiler

    The ES-405 is a near reference air quality sensor designed to provide accurate real-time measurements of TSP*, PM10, PM4, PM2.5, and PM1 particulate concentrations simultaneously. It reports these five key particulate concentrations in both indoor and outdoor environments. The rugged...

  • Aerocet 831 Handheld Aerosol Mass Monitor

    The Aerocet 831 from Met One Instruments Powered by Acoem is a completely portable, full–featured, battery operated, handheld mass monitor for indoor air quality monitoring. This device simultaneously provides five critical air particulate mass ranges (PM1, PM2.5, PM4, PM10, &...

  • The ES-642 Remote Dust Monitor

    Remote Dust Monitor ES-642

    Met One Instruments’ ES-642 Remote Dust Monitor is an industrial air-quality sensor designed to provide real time particle concentration measurements in both indoor and outdoor environments. Our ES-642 measures particulate concentration using a highly sensitive forward scatter laser nephelometer, which...

  • E-Sampler Dual Ambient Monitor/Sampler

    Our E-SAMPLER is the most feature-packed light-scatter Aerosol Monitor available. Whatever your monitoring needs, the E-sampler will provide accurate, dependable, and relevant data.

  • AQ EAGLE Air Quality Monitoring System

    The AQ EAGLE system is a multi parameter ambient air quality monitor from Met One Instruments Powered by Acoem which measures and reports particulate and meteorological data. The ES-405 particulate profiler continuously samples ambient air and reports particulate mass concentrations simultaneously and...

  • NPM 2 Network Particulate Monitor - Met One Instruments

    NPM 3 Network Particulate Monitor

    The Met One Instruments, Inc. NPM 3 is a forward light scatter laser nephelometer particulate monitor which automatically measures real-time airborne TSP, PM10, or PM2.5 particulate concentration levels. The NPM 3 features improved reliability and lower maintenance. Each unit uses...

  • Model 212 Ambient Particulate Profiler

    Ambient profiling of aerosol particulates has been simplified by the Met One Instruments, Inc. Model 212 Ambient Particulate Profiler. The 212 sizes and counts particles in eight digital bins and reports the information on command. Each of the eight channels...

  • GAS-1010 Ozone Analyzer

      The GAS-1010 ozone (O3) analyzer by Met One Instruments Powered by Acoem delivers precise and reliable performance at an excellent value. It uses proven non-dispersive ultraviolet (UV) absorption technology to measure O3 in ambient air (LDL < 0.5 ppb,...

  • GAS-1030 Carbon Monoxide Analyzer

      The GAS-1030 carbon monoxide (CO) analyzer from Met One Instruments Powered by Acoem delivers precise and reliable performance at an excellent value. It uses proven NDIR gas filter correlation technology to measure CO in ambient air (LDL < 40 ppb,...

  • GAS-1031 Carbon Dioxide Analyzer

      The GAS-1031 carbon dioxide (CO2) analyzer by Met One Instruments Powered by Acoem uses non-dispersive infrared (IR) gas correlation spectroscopy to provide accurate, stable, and repeatable measurements of gaseous CO2. It can be configured to operate in absolute or...

  • GAS-1040 Nitrogen Oxides Analyzer

      The GAS-1040 Oxides of Nitrogen (NOx) analyzer from Met One Instruments Powered by Acoem delivers precise and reliable performance at an excellent value. It uses proven chemiluminescence technology to measure NO, NO2 and NOx in ambient air (LDL <...

  • GAS-1044 Ammonia and Oxides of Nitrogen Analyzer

      The GAS-1044 Ammonia Analyzer from Met One Instruments Powered by Acoem delivers precise and reliable performance at an excellent value. It uses proven chemiluminescence technology and an external thermal catalytic converter to measure NO, NO2, NOX and NH3 in...

  • GAS-1050 Sulfur Dioxide Analyzer

      The GAS-1050 Sulfur Dioxide (SO2) Analyzer from Met One Instruments Powered by Acoem delivers precise and reliable performance at an excellent value. It uses proven pulsed UV fluorescent radiation technology to measure SO2 in ambient air (LDL < 0.3...

  • GAS-1051 Sulfur Dioxide & Hydrogen Sulfide Analyzer

      The GAS-1051 Sulfur Dioxide and Hydrogen Sulfide Analyzer from Met One Instruments Powered by Acoem delivers precise and reliable performance at an excellent value. It combines pulsed fluorescence detection with an internal catalytic converter to sequentially measure H2S and...

  • GAS-1055 Hydrogen Sulfide Analyzer

      The GAS-1055 Hydrogen Sulfide (H2S) Analyzer from Met One Instruments Powered by Acoem delivers precise and reliable performance at an excellent value. It uses proven UV fluorescent radiation technology and an internal thermal catalytic converter to measure H2S in...

  • GAS-1057 Total Reduced Sulfur Analyzer

      The GAS-1057 Total Reduced Sulfur (TRS) analyzer from Met One Instruments Powered by Acoem delivers precise and reliable performance at an excellent value. It uses proven UV fluorescent radiation technology and a thermal converter to measure TRS in ambient...

  • GAS-1060 Nitrogen Dioxide Analyzer

      The GAS-1060 Nitrogen Dioxide (NO2) Analyzer with Cavity Attenuated Phase Shift (CAPS) spectroscopy technology from Met One Instruments Powered by Acoem allows direct measurement of NO2, rather than an indirect calculation from a chemiluminescence analyzer. Using a modulated blue...

  • CAL-100 Gas Dilution Calibrator

      The CAL-100 Gas Dilution Calibrator from Met One Instruments Powered by Acoem performs necessary gas dilution calibrations and is used in conjunction with regulatory traceable gases and a zero air generator. The most cost effective calibration solution on the...

  • CAL-200 Gas Dilution Calibrator with Internal Ozone Generator

      Introducing the CAL-200 Gas Dilution Calibrator with Internal Ozone Generator from Met One Instruments Powered by Acoem. We know how important measuring ground-level ozone accurately can be. With all the base features of the CAL-100 calibrator, the CAL-200 includes...

  • CAL-300 Advanced Gas Dilution Calibrator

    with Internal Ozone Generator & Ozone Photometer (Ozone Transfer Standard) The CAL-300 Calibrator from Met One Instruments Powered by Acoem includes all the features of the CAL-200, with the addition of an ozone photometer for the accurate creation and delivery...

  • CAL-301 Top-of-the-Line Gas Dilution Calibrator

      The CAL-301 Gas Dilution Calibrator from Met One Instruments Powered by Acoem includes a built-in ozone generator and internal zero-air source as well as a compact reference photometer, providing precise feedback control for accurate ozone generation and measuring in...

  • LVS-100 Low-Volume Air Sampler

    Introducing the LVS-100 from Met One Instruments Powered by Acoem. The LVS-100 is a flexible micro-sampling platform for PM2.5, PM10, and TSP, and offers basic meteorological parameters. The LVS-100 Low Volume Air Sampler provides a flexible sampling platform for PM10, PM2.5,...

  • E-SEQ-FRM Sequential Reference Method Sampler - Met One Instruments

    E-SEQ-FRM Sequential Reference Particulate Sampler

    The E-SEQ-FRM Reference Method Particulate Sampler from Met One Instruments Powered by Acoem meets the regulatory requirements for PM2.5, PM10, and PM10-2.5 sampling methods. The E-SEQ-FRM accommodates up to sixteen (16) 47-mm diameter filter samples and may be pre-programmed to a...

  • E-FRM-DC Reference Method Particulate Sampler

      The new and improved Met One Instruments, Inc. E-FRM-DC sampler is a single-event filter sampler to determine daily PM2.5 or PM10 particulate concentrations in ambient air. The E-FRM-DC has an innovative design and unique features that provide a versatile, reliable,...

  • Particulate Sampler E-FRM Reference

    Met One Instruments’ E-FRM is a single channel particulate sampler approved as a US-EPA reference method for PM2.5, PM10, PM10-2.5. Configured with an alternate PM2.5 cyclone, the E-FRM may also be operated as a US-EPA designated equivalent method for PM2.5....

  • Industrial Weather Station

    Industrial Weather Stations from Met One Instruments Powered by Acoem are configured to provide plant operators with the weather data needed for operations, regulatory compliance, safety, and emergency response. The systems use reliable and accurate sensors to measure the weather...

  • ReadyWeather

    ReadyWeather Data-to-Desktop Weather Station

    ReadyWeather is part of the Met One Instruments Powered by Acoem family of data-to-desktop products, designed with ease of use and data integrity in mind. This rapidly deployable weather station may be used in fixed or temporary installation applications, with...

  • General Purpose Weather Station

    General Purpose Weather Station

    Met One Instruments’ General Purpose Weather Station is specifically designed for monitoring ambient meteorological conditions. It is available in pre-packaged configurations for fast delivery; yet is easily customized with additional sensors and accessories to suit many measurement applications. The General...

  • Air Quality Weather Station

    Air Quality Weather Station

    Met One’s Air Quality Weather Stations are specifically configured to comply with U.S. Environmental Agency (EPA) and Nuclear Regulatory Commission (NRC) guidelines for air quality and regulatory meteorological monitoring. Stations are available in pre-packaged configuration for rapid delivery but can...

  • AIO 2 Sonic Weather Sensor - Met One Instruments

    Weather Sensor AIO 2 Sonic

    The AIO 2 Sonic Weather Sensor is a complete, high performance weather sensor using Met One Instruments’ proven 2D sonic technology. This technology provides reference grade accuracy without moving parts and includes a built-in compass used for automatic magnetic north...

  • 30.5 Industrial Grade Sonic Anemometer

    The 30.5 Sonic Anemometer is designed for ambient wind sensing in harsh environments and industrial applications as a direct replacement for conventional mechanical propeller and cup anemometers, both in terms of performance and cost. The 30.5 requires no periodic maintenance...

  • MSO Weather Sensor - Met One Instruments

    MSO Weather Station

    The MSO is a compact, fully integrated, 5-parameter Weather Station. Wind Speed and Wind Direction are measured using mechanical anemometer sensors. All other measurements are housed in a multi-plate naturally-aspirated radiation shield to reduce solar radiation heating errors. The shield...

  • CCS COMET Cloud Service - Met One Instruments

    CCS COMET Cloud+ Service

    Met One Instruments’ COMET Cloud Plus+ (CCS) is a cellular modem and cloud data service package which is directly compatible with a variety of air quality and meteorological sensors. The CCS modem is available for 4G LTE Domestic and GSM/...

  • 10718 Solar Radiation Sensor

    This silicon-cell pyranometer, Solar Radiation Sensor part number # 10718, is a compact, rugged and cost-effective sensor for shortwave radiation measurements. Applications include agriculture, ecological and hydrological weather networks, and solar panel arrays. Each sensor is calibrated in controlled laboratory...

  • Model 820457 Ultrasonic Wind Sensor

    Met One’s Model 820457 Ultrasonic Wind Sensor features durable, corrosion-resistant construction with sensitive ultrasonic transducers secured in a streamlined molded frame. The 820457 is fully wind-tunnel tested and calibrated to provide reliable, accurate wind measurement. Standard outputs include analog voltage...

  • Visibility Sensor 6400

    The Model 6400 Visibility Sensor offered by Met One Instruments Powered by Acoem is designed to monitor visibility conditions over a range of 20ft-50miles (6m-80km). The Model 6400 includes both digital and relay outputs. The Digital RS232 output at 300-38,400...

  • 905 Portable Tripod

    The model 905 Tripod is a lightweight, collapsible aluminum and stainless steel tripod designed for rapid deployment and retrieval. It can be easily transported and erected by a single person. The tripod is intended to support a complement of weather...

  • AQ Profiler

    The AQ Profiler from Met One Instruments Powered by Acoem is a versatile and powerful particle counter with ultimate flexibility and endless capabilities. Based upon the proven principle of Optical Light Scatter using a Laser Diode, our improved processing and...

  • Met One Comet Software

    Comet Software

    Comet software is a utility for extracting information (data, alarms, settings, etc.) from Met One Instruments’ products. The software is designed for the user to easily access information within a product without having to know underlying communications protocol for that...

  • Air Plus Software

    Air Plus software includes all of the functions required for the collection, viewing of data, and production of both tabular and graphic reports needed by most users of an air quality or other environmental monitoring system. It is designed for...

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