--- title: AST | Products description: Learn more about our virtually-silent, portable, and easy-to-use air pollution samplers. image: https://www.accsensors.com/hubfs/Featured_Products.jpg --- [Skip to content](https://www.accsensors.com/products#main-content) [![AST](https://www.accsensors.com/hs-fs/hubfs/AST.jpg?width=2303&height=774&name=AST.jpg)](https://www.accsensors.com/?hsLang=en) - [Products](https://www.accsensors.com/products) Show submenu for Products - [UPAS v2.1](https://www.accsensors.com/upasv2.1) - [UPAS v2.1 PLUS](https://www.accsensors.com/upasv2.1plus) - [UPAS v2.0](https://www.accsensors.com/upasv2.0) - [Home Health Box](https://www.accsensors.com/indoor_sampling) - [Inlets and Accessories](https://www.accsensors.com/accessories) - [UPAS Outdoor Enclosure](https://www.accsensors.com/upas_outdoor_enclosure) - [Sample Analysis Services](https://www.accsensors.com/sample_analysis) - Technical Resources Show submenu for Technical Resources - [Applications Blog](https://www.accsensors.com/blog) - [R Shiny Application](https://accsensors.shinyapps.io/shinyAST/) - [astr R Package](https://github.com/accsensors/astr) - [YouTube](https://www.youtube.com/channel/UCbbSB_ja8JY-xX90D94qyKA) - Contact Us Show submenu for Contact Us - [Request Free Demo](https://www.accsensors.com/freetrial) - [Request a Quote](https://www.accsensors.com/quote) - [Request Support](https://www.accsensors.com/support-request-form) - [Our Team](https://www.accsensors.com/about) - [Distributors](https://www.accsensors.com/distributors) Open main navigation Close main navigation - [Products](https://www.accsensors.com/products) Show submenu for Products - [UPAS v2.1](https://www.accsensors.com/upasv2.1) - [UPAS v2.1 PLUS](https://www.accsensors.com/upasv2.1plus) - [UPAS v2.0](https://www.accsensors.com/upasv2.0) - [Home Health Box](https://www.accsensors.com/indoor_sampling) - [Inlets and Accessories](https://www.accsensors.com/accessories) - [UPAS Outdoor Enclosure](https://www.accsensors.com/upas_outdoor_enclosure) - [Sample Analysis Services](https://www.accsensors.com/sample_analysis) - Technical Resources Show submenu for Technical Resources - [Applications Blog](https://www.accsensors.com/blog) - [R Shiny Application](https://accsensors.shinyapps.io/shinyAST/) - [astr R Package](https://github.com/accsensors/astr) - [YouTube](https://www.youtube.com/channel/UCbbSB_ja8JY-xX90D94qyKA) - Contact Us Show submenu for Contact Us - [Request Free Demo](https://www.accsensors.com/freetrial) - [Request a Quote](https://www.accsensors.com/quote) - [Request Support](https://www.accsensors.com/support-request-form) - [Our Team](https://www.accsensors.com/about) - [Distributors](https://www.accsensors.com/distributors) - [Try for Free](https://www.accsensors.com/freetrial) [Try for Free](https://www.accsensors.com/freetrial?hsLang=en) ## Products [![UPAS v2.1](https://www.accsensors.com/hs-fs/hubfs/UPAS%20v2.1.png?width=1685&height=1685&name=UPAS%20v2.1.png "UPAS v2.1")](https://www.accsensors.com/upasv2.1?hsLang=en) [UPAS v2.1](https://www.accsensors.com/upasv2.1?hsLang=en) Wearable, virtually-silent particulate matter sampler with GPS, light sensor, and accelerometer [![UPAS v2.1 PLUS](https://www.accsensors.com/hs-fs/hubfs/UPASv2.1PLUS_icon.jpg?width=2000&height=2000&name=UPASv2.1PLUS_icon.jpg "UPAS v2.1 PLUS")](https://www.accsensors.com/upasv2.1plus?hsLang=en) [UPAS v2.1 PLUS](https://www.accsensors.com/upasv2.1plus?hsLang=en) UPAS v2.1 with time-resolved fine particulate matter sensor [![UPAS v2.0](https://www.accsensors.com/hs-fs/hubfs/UPAS%20v2.0.png?width=2000&height=2000&name=UPAS%20v2.0.png "UPAS v2.0")](https://www.accsensors.com/upasv2.0?hsLang=en) [UPAS v2.0](https://www.accsensors.com/upasv2.0?hsLang=en) Wearable, virtually-silent particulate matter sampler with GPS \[discontinued\] [![Home Health Box](https://www.accsensors.com/hs-fs/hubfs/Home%20Health%20Box.jpg?width=2000&height=2000&name=Home%20Health%20Box.jpg "Home Health Box")](https://www.accsensors.com/indoor_sampling?hsLang=en) [Home Health Box](https://www.accsensors.com/indoor_sampling?hsLang=en) Particulate matter and gas sampler with time-resolved pollutant sensors for indoor monitoring [![Accessories](https://www.accsensors.com/hs-fs/hubfs/accessories_icon.png?width=2000&height=2000&name=accessories_icon.png "Accessories")](https://www.accsensors.com/accessories?hsLang=en) [Inlets and Accessories](https://www.accsensors.com/accessories?hsLang=en) Size-selective inlets, filter cartridges, and more [![UPAS v2.1 PLUS in outdoor enclosure](https://www.accsensors.com/hs-fs/hubfs/enclosure_icon.jpg?width=2000&height=2000&name=enclosure_icon.jpg "UPAS v2.1 PLUS in outdoor enclosure")](https://www.accsensors.com/upas_outdoor_enclosure?hsLang=en) [UPAS Outdoor Enclosure](https://www.accsensors.com/upas_outdoor_enclosure?hsLang=en) Compatible with all UPAS versions [![A photograph of 37-mm-diameter Teflon membrane filter with a particulate matter sample on it](https://www.accsensors.com/hs-fs/hubfs/sample_analysis_icon-1.jpg?width=2000&height=2000&name=sample_analysis_icon-1.jpg "A photograph of 37-mm-diameter Teflon membrane filter with a particulate matter sample on it")](https://www.accsensors.com/sample-analysis?hsLang=en) [Sample Analysis](https://www.accsensors.com/sample_analysis?hsLang=en) Gravimetric, optical black carbon, and XRF analysis of filter-based PM samples ## Built with you in mind ![UPAS v2.1 PLUS](https://www.accsensors.com/hubfs/UPAS%20v2.1%20PLUS.jpg "UPAS v2.1 PLUS") ### UPAS v2.1 PLUS Our flagship wearable sampler. Collect filter-based air samples on to 37 mm filter media along with extensive sensor data to inform you on motion, compliance, environmental factors, particulate matter, carbon dioxide and tVOC and NOx. [Download a spec sheet](https://www.accsensors.com/hubfs/Manuals%20and%20QSGs/AST-UPAS%20(v2+)-Product%20Info%20Sheet%20(Version%202.1%2020220620).pdf?hsLang=en)for a complete description.   UPAS v2.1 PLUS product page ![UPAS v2.1](https://www.accsensors.com/hubfs/UPAS%20v2.1.png "UPAS v2.1") ### UPAS v2.1 Collect filter-based air samples on to 37 mm filter media along with sensor data to inform you on motion, compliance, environmental factors. [Download a spec sheet](https://www.accsensors.com/hubfs/Manuals%20and%20QSGs/AST-UPAS%20(v2+)-Product%20Info%20Sheet%20(Version%202.1%2020220620).pdf?hsLang=en)for a complete description.   UPAS v2.1 product page ![UPAS v2.0](https://www.accsensors.com/hs-fs/hubfs/UPAS%20v2.0.png?width=2000&height=2000&name=UPAS%20v2.0.png "UPAS v2.0") ### The UPAS v2.0 The sampler that started it all. This lightweight, nearly silent, 240 gram sampler collects airborne particulate matter on a 37 mm filter with continuously monitored volumetric flow. Each sampling run is accompanied by a log file that reports hardware performance and environmental information. With millions of hours sampled on these devices they have become the favorite of exposure scientists, epidemiologists and workplace safety professionals. [Learn more by downloading a spec sheet. ](https://www.accsensors.com/hubfs/Manuals%20and%20QSGs/AST-UPAS%20(v2)-Product%20Info%20Sheet%20(Version%201.3%2020220620).pdf?hsLang=en) UPAS v2.0 product page ![Home Health Box](https://www.accsensors.com/hs-fs/hubfs/Home%20Health%20Box.jpg?width=2000&height=2000&name=Home%20Health%20Box.jpg "Home Health Box") ### The Home Health Box The Home Health Box is a new way to thoroughly evaluate your indoor air. Using our patented air sampling technology, the programmable Home Health Box samples for particulates and gases that impact human health in the short and long term. Additionally continuous sensing of the environment allows the Home Health Box to identify the times of day and behaviors impacting your indoor air quality. The Home Health Box offers a simple alternative to lugging around a whole suitcase of air sampling equipment. [Learn more here. ](https://www.accsensors.com/homehealthbox?hsLang=en) Home health box product page - ![PM2.5_1LPM_G2P3](https://www.accsensors.com/hs-fs/hubfs/PM25gen2_1LPM.jpg?width=264&height=264&name=PM25gen2_1LPM.jpg) - ![PM2.5_2LPM_G2P3](https://www.accsensors.com/hs-fs/hubfs/PM25_2LPM.jpg?width=2849&height=2845&name=PM25_2LPM.jpg) - ![Respirable_2LPM_G2P3](https://www.accsensors.com/hs-fs/hubfs/Resp_2LPM.jpg?width=368&height=362&name=Resp_2LPM.jpg) - ![Thoracic_2LPM_G2P3](https://www.accsensors.com/hs-fs/hubfs/Thoracic_2LPM.jpg?width=2704&height=2704&name=Thoracic_2LPM.jpg) - ![Filter Cartridge_37mm_G2P3](https://www.accsensors.com/hs-fs/hubfs/Gen2Cart-1.jpg?width=1731&height=1680&name=Gen2Cart-1.jpg) - ![Filter Cartridge_25mm_G2P3](https://www.accsensors.com/hs-fs/hubfs/25mm_cart.jpg?width=432&height=432&name=25mm_cart.jpg) - ![Flow Adapter_G2P3](https://www.accsensors.com/hs-fs/hubfs/Flowadapt.jpeg?width=1097&height=1097&name=Flowadapt.jpeg) ### Size-Selective Inlets and Accessories  The Home Health Box is a new way to thoroughly evaluate your indoor air. Using our patented air sampling technology, the programmable Home Health Box samples for particulates and gases that impact human health in the short and long term. Additionally continuous sensing of the environment allows the Home Health Box to identify the times of day and behaviors impacting your indoor air quality. The Home Health Box offers a simple alternative to lugging around a whole suitcase of air sampling equipment. [Learn more here. ](https://www.accsensors.com/homehealthbox?hsLang=en) Size-selective inlets and accessories product page ## Accessories to suit your applications [Size selective inlets](https://www.accsensors.com/hubfs/Manuals%20and%20QSGs/AST-UPAS%20Inlets-Product%20Info%20Sheet%20(Version%202.0%2020220624).pdf?hsLang=en), flow adapters and outdoor enclosures. - ### PM2.5 - 1 LPM inlet PM2.5 is monitored worldwide for ambient and personal exposure to harmful particles. - ### PM2.5 - 2 LPM A two liter per minute inlet allows you to push your PM2.5 limits of detection lower with a higher flow rate.   - ### Respirable Inlet The respirable size cut is a standard in many countries to monitor workplace exposure to harmful dusts. This compact inlet allows for simple ergonomic sampling in the breathing zone without the hassle of large dangling cyclone assemblies.  - ### PM10 / Thoracic inlet Sampling the larger size cuts for particles is gaining in popularity as exposure limits are pushed lower. This inlet samples within the bounds of the PM10 and Thoracic collection curves.  - ### Calibration and Flow adapter Easily check flow against a flow primary or get creative using the UPAS as a sampler apart from the thread on inlets.  - ### Replacement Cartridges Our universal second generation cartridge is reusable. The cartridges are a key part of what allow the full stack of inlet+ cartridge + sampler to maintain such a low profile.  ![PM25gen2_1LPM](https://www.accsensors.com/hubfs/PM25gen2_1LPM.jpg) ![PM25_2LPM](https://www.accsensors.com/hubfs/PM25_2LPM.jpg) ![Resp_2LPM](https://www.accsensors.com/hubfs/Resp_2LPM.jpg) ![Thoracic_2LPM](https://www.accsensors.com/hubfs/Thoracic_2LPM.jpg) ![Gen2Cart-1](https://www.accsensors.com/hubfs/Gen2Cart-1.jpg) ![Flowadapt](https://www.accsensors.com/hubfs/Flowadapt.jpeg) ![IMG_7719](https://www.accsensors.com/hubfs/IMG_7719.jpg "IMG_7719") ## Outdoor Enclosure After many customer requests we have released a [custom enclosure](https://www.accsensors.com/hubfs/Manuals%20and%20QSGs/AST-Outdoor-Enclosure-Product%20Info%20Sheet%20(Version%201.0%2020220823).pdf?hsLang=en) for the UPAS v2 and v2+ products. Don't risk your hardware or your data accuracy with a DIY solution. - Tested for protection of hardware and to maintain accuracy of sampling. - Battery backup and solar panels available to extend the run time. - Optional cooling fan available for high heat conditions.  ## Ready to see how our products can make air sampling simple? Fill out this form to request a demonstration unit that you can try, for free, before you buy.  [Request a Free Demo](https://www.accsensors.com/freetrial?hsLang=en) ###### [Products](https://www.accsensors.com/products) [UPAS v2.1](https://www.accsensors.com/upasv2.1?hsLang=en) [UPAS v2.1 PLUS](https://www.accsensors.com/upasv2.1plus?hsLang=en) [UPAS v2.0](https://www.accsensors.com/upasv2.0?hsLang=en) [Home Health Box](https://www.accsensors.com/indoor_sampling?hsLang=en) [Inlets and Accessories](https://www.accsensors.com/accessories?hsLang=en) [UPAS Outdoor Enclosure](https://www.accsensors.com/upas_outdoor_enclosure?hsLang=en) [Sample Analysis](https://www.accsensors.com/sample-analysis?hsLang=en) ###### Technical Resources [Applications Blog](https://www.accsensors.com/from-the-access-sensor-tech-team?hsLang=en) [R Shiny Application](https://accsensors.shinyapps.io/shinyAST/) [astr R Package](https://github.com/accsensors/astr) [YouTube](https://www.youtube.com/channel/UCbbSB_ja8JY-xX90D94qyKA)       ###### Contact Us [Request a Free Demo](https://www.accsensors.com/freetrial?hsLang=en) [Request a Quote](https://www.accsensors.com/quote?hsLang=en) [Request Support](https://www.accsensors.com/support-request-form?hsLang=en) [Our Team](https://www.accsensors.com/about?hsLang=en) [Distributors](https://www.accsensors.com/en-us/distributors?hsLang=en) [contact@accsensors.com](mailto:contact@accsensors.com)     ###### Legal [Privacy Policy](https://www.accsensors.com/privacypolicy?hsLang=en) [Terms and Conditions](https://www.accsensors.com/termsanduse?hsLang=en) [FCOI](https://www.accsensors.com/fcoi?hsLang=en)         [linkedin-in icon](https://www.linkedin.com/company/access-sensor-technologies/mycompany/?viewAsMember=true) [Check out our YouTube channel.](https://www.youtube.com/channel/UCbbSB_ja8JY-xX90D94qyKA) [Link to our GitHub](https://github.com/accsensors) --- Access Sensor Technologies | 320 E Vine Dr. Ste. 221 | Fort Collins, CO 80524