Air Quality Problems and Solutions in Schools

Allowing poor air quality in schools isn’t an issue to overlook. Studies have shown that air pollution in both indoor and outdoor spaces can have physical and psychological effects. Among the individuals most vulnerable to these effects are children, due to their developing immune systems. The Massachusetts Institute of Technology (MIT) recently conducted a review of numerous existing studies concerning negative effects of air pollution. They found that air pollution has a number of disastrous effects on health. From these studies, they concluded that air pollution can alter important cognitive brain functions, such as decision making. Air pollution has also been shown to increase levels of annoyance and anxiety. Additionally, high levels of air pollution, such as those found in major cities in China, were shown in one study to reduce an individual’s ability to perform well in both verbal and math tests. These studies are just a few out of the large body of research that has found that air quality can have devastating effects on physical and psychological health of individuals.

There is clearly cause for concern over the impacts of poor indoor air quality in schools. As a current student who has spent many hours in various classrooms, I am familiar with the need for clean and healthy air in school settings. I have lived in California my entire life, a state deeply affected by wildfires. Almost every year, the air outside is filled with smoke from these fires, which is unhealthy to breathe. In situations like this, it is important that the air quality both indoors and outdoors is measured to ensure that students are not breathing unhealthy air. Additionally, many other factors can contribute to air quality not being sufficiently healthy. One culprit is lack of sufficient ventilation. This can increase the concentrations of contaminants in classrooms. More specifically, poor ventilation has been shown to cause large concentrations of particulate matter in classrooms, which is unhealthy to breathe. There are numerous other factors contributing to poor indoor air quality in schools. These include being close to busy roads and cities, chemicals used in cleaning products, pesticides used on lawns around schools, and mold present in buildings. One additional major cause of indoor air pollution in certain parts of the world is smoke from wildfires. The EPA advises that smoke from outdoors can easily enter buildings, and quickly cause the quality of the air to decline. Smoke from wildfires poses an additional threat, as it is made up of extremely small particles that can enter children’s respiratory systems. Natural infiltration from outside, as well as ventilation systems such as fans and heating or cooling systems allow damaging particles from outside to impact indoor air quality. These causes, along with many more, can be responsible for causing air quality to deteriorate in indoor spaces in schools.

An additional component to take into account is the quality of air outside schools. In certain situations, either indoor or outdoor air quality may be significantly healthier. When this arises, it is important to be able to measure where the air quality is better. By doing so, administrators in schools can determine where it is safest for children to be in specific moments. In an environment such as a school, which focuses on learning and development, it is of utmost importance to not allow air quality to negatively impact children. Thankfully, there are steps that can be taken to ensure that the air inside classrooms is safe for those breathing it. As Peter Drucker famously stated, “if you can’t measure it, you can’t improve it.” In the case of school air quality, the most important step to take is measuring the quality of the air in schools. If you are not able to determine what the air quality is, there is no easy path forward to creating a healthier environment in classrooms. Piera’s IPS sensors and Canāree air quality monitors allow you to measure particles present in your air, in order to determine the overall air quality. These sensors can be used to accurately measure indoor air quality. This is because they are able to sense smaller particles, which are often present indoors and can serve as an even bigger threat. By measuring the air quality of the indoor spaces in schools, a deeper understanding can be gained as to just how healthy the air is for students, which can then be acted upon to improve air quality.

Author: Dani Bier — Piera Systems

Secure Agility and Piera Systems Sign Agreement to Deploy Canāree Air Quality Monitors for Healthier Schools

Scottsdale, Arizona – May 4, 2022. Piera Systems (“Piera”) is pleased to announce the signing of a reseller agreement with Secure Agility, an IT services leader headquartered in Burwood, NSW, Australia. Secure Agility will market, sell, and distribute the highly accurate Canāree™ family of Air Quality Monitors as part of their focus on applying emerging technologies to deliver real transformation to organizations with critical infrastructure needs. Canāree air quality monitors are built using the patented Intelligent Particle Sensor (“IPS”) technology from Piera and they combine ease-of-use and rapid deployment with unparalleled particle measurement and other environmental sensing capabilities.

 

Secure Agility’s focus on deploying IoT products combined with managed services and cloud automation is a natural fit for schools, universities, and corporate clients looking to adopt emerging technologies to create and maintain healthy spaces.

 

“The pandemic has put the focus squarely on air quality and our customers are eager to deploy accurate solutions to keep their students, employees, and customers safe,” said Brendan Abbott, IOT Practice Lead at Secure Agility. “Our customers rely on our expertise to build, deploy, and manage innovative technology solutions and the Canāree will help us deliver healthy spaces and peace of mind.”

 

“We are excited to collaborate with Secure Agility given their expertise and proven track record in deploying and managing complex IT solutions,” said Vin Ratford, CEO of Piera Systems. “Canāree AQMs are easy to use and are fully integrated to the cloud so this will be a natural extension of Secure Agility’s services to their existing clients”.

 

Indoor air quality has direct and substantial impacts on human health, from loss of productivity to causing serious diseases including lung cancer, Alzheimer’s, and cardiovascular diseases. The smallest particles, less than 1 micron in size, are the most dangerous as they are readily absorbed into the bloodstream. Canāree monitors are independently certified to accurately detect these sub-micron particles compared to most other monitors that only provide estimates.

About Piera Systems, Inc.

Piera Systems Inc. is on a mission to make air quality measurement accurate, simple, inexpensive, and pervasive, enabling a major improvement in the health of all humans. Piera has developed a family of ‘Intelligent Particle Sensors’ utilizing a breakthrough custom processor to detect particulate matter (PM), a major component of air pollution. Unlike existing low-cost PM sensors, IPS has superior accuracy over a wider range, including harmful ‘very fine particles’ smaller than 1.0 micron, and reports particle size and count in real-time at low power. IPS is the first software defined PM sensor with up to 7 particle sizes allowing its use in many applications. IPS data is analyzed using AI/ML algorithms to identify and classify pollution sources such as vape, cigarette smoke, cooking, etc. IPS sensors and Canāree air quality monitors answer the question, ‘What’s In Your Air?’

Headquartered in the US, more information on Piera Systems air quality solutions can be found at https://www.pierasystems.com

 

About Secure Agility

Secure Agility delivers Enterprise technology expertise in cloud, network & security, IoT and workplace modernisation. We enable organisations to drive business growth and efficiency by adopting cloud services that deliver secure, innovative, and optimised outcomes.

In a complex world that challenges technology to solve almost everything, we provide the answers.

With experience since 2002, we enable our customers with highly transformative solutions leveraging leading technologies in Cloud, IoT, data, software-defined networking, Cyber security and more.

We’re a first-choice partner to some of Australia’s leading technology providers, backed by a strong in-house team of technical and business experts. More information can be found at https://secureagility.com/

 

 

Contact Information

Raj Seelam

Vice President of Marketing & Customer Success

raj.seelam@pierasystems.com

 

Kirk Jones

Vendor Alliance Manager

Kirk.jones@secureagility.com

Sensorbee and Piera Systems Partner on Highly Accurate Outdoor Air Quality Monitors

Scottsdale, Arizona – Mar 15, 2022. Piera Systems (“Piera”) is pleased to announce a collaboration with Sensorbee in its release of highly accurate Outdoor Air Quality Monitors (“AQM”). Sensorbee, based out of Linkoping, Sweden, makes highly differentiated outdoor monitors to provide cities with extensive, hyper-local air quality measurements to enable their Smart City plans.

 

“Air pollution is an enormous global health problem and our ability to combat it starts with accurately measuring it. We couldn’t be more pleased with our collaboration with Piera and the quality of their particle sensors,” said David Löwenbrand, CEO of Sensorbee. “We are now able to offer highly accurate outdoor air quality monitors while unlocking brand new applications.”

 

Outdoor air quality monitoring has traditionally focused on PM2.5 and PM10 but many pollution sources including wildfire smoke and diesel pollution contain particles in the sub-micron range. Many of these smaller particles infiltrate indoor spaces where most of our time is spent and they pose the greatest danger to human health thus making their measurements imperative to improving health outcomes.

 

Ability to accurately track sub-micron particles in real-time opens new applications such as tracking diesel vehicles in urban environments and identifying likely sources of pollution even in large metropolitan areas. As cities ramp up their commitments to provide more breathable environments for their citizens, better data can offer vital insights that can inform more efficient mitigation efforts.

 

“A sound Smart City plans starts with better data at its heart and we are excited to work with Sensorbee as they deploy their highly accurate outdoor air quality monitors to market. Ability to accurately monitor outdoor air quality is critical to cities racing to meet their Climate Change commitments,” said Vin Ratford, CEO of Piera Systems. “Traditional outdoor monitoring of larger particles like PM2.5 and PM10 is simply inadequate and real-time monitoring of sub-micron particles is essential to improving breathability everywhere.”

About Piera Systems, Inc.

Piera Systems Inc. is on a mission to make air quality measurement accurate, simple, inexpensive, and pervasive, enabling a major improvement in the health of all humans. Piera has developed a family of ‘Intelligent Particle Sensors’ utilizing a breakthrough custom processor to detect particulate matter (PM), a major component of air pollution. Unlike existing low-cost PM sensors, IPS has superior accuracy over a wider range, including harmful ‘very fine particles’ smaller than 1.0 micron, and reports particle size and count in real-time at low power. IPS is the first software defined PM sensor with up to 7 particle sizes allowing its use in many applications. IPS data is analyzed using AI/ML algorithms to identify and classify pollution sources such as vape, cigarette smoke, cooking, etc. IPS sensors and Canāree air quality monitors answer the question, ‘What’s In Your Air?’

Headquartered in the US, more information on Piera Systems air quality solutions can be found at https://www.pierasystems.com

 

About Sensorbee

Founded in 2018 is a cleantech startup that provides ultra-local, air quality sensors, data, and cloud-based analytics solutions. Sensorbee’s solution is based on mobile and stationary sensors and offers comprehensive visibility into the air pollution and emissions in urban environments. Sensorbee enables governments and companies to reduce air pollution globally.

Headquartered in Sweden, more information on Sensorbee air quality can be found at https://www.sensorbee.com

 

Contact Information

Raj Seelam

Vice President of Marketing & Customer Success

raj.seelam@pierasystems.com

 

David Löwenbrand

CEO

hello@sensorbee.com

+46 101385373

Build Equinox and Piera Systems Sign Agreement to Deploy Canāree Air Quality Monitors for Healthier Homes

Scottsdale, Arizona – Feb 22, 2022. Piera Systems (“Piera”) is pleased to announce the signing of a reseller agreement with Build Equinox, a leader in fresh air ventilation technology headquartered in Urbana, IL, to market, sell, and distribute the highly accurate Canāree™ family of Air Quality Monitors. Canāree air quality monitors are built using the patented Intelligent Particle Sensor (“IPS”) technology from Piera and they combine ease-of-use and rapid deployment with unparalleled particle measurement and other environmental sensing capabilities.

 

Build Equinox is the maker of CERV2®, a premium smart ventilation system that provides comprehensive management of indoor air, efficiently and intelligently, to make any home a healthy home.

 

“Our CERV2 ventilation systems rely on accurate data to keep indoor air healthy at a much higher efficiency than other systems. Piera’s Canāree monitors are exactly what we have been looking for to provide accurate particulate air quality data,” said Ben Newell, President of Build Equinox. “Canāree will help us deliver an even higher quality of service to our customers and taking our industry-leading CERV2 systems to the next level.”

 

 

“We are really excited to partner with Build Equinox given their deep expertise and proven track record in managing indoor air quality in a variety of environments across the US and Canada,” said Vin Ratford, CEO of Piera Systems. “Indoor air quality is critical to human health and we are looking forward to deploying this powerful combination of our Canāree monitors with the CERV2 system into healthy homes everywhere”.

 

Indoor air quality has direct and substantial impacts on human health, from loss of productivity to causing serious diseases including lung cancer, Alzheimer’s, and cardiovascular diseases. The smallest particles, less than 1 micron in size, are the most dangerous as they are readily absorbed into the bloodstream. Canāree monitors are independently certified to accurately detect these sub-micron particles compared to most other monitors that only provide estimates.

 

“Human health is directly correlated to sub-micron particles and Piera’s sensors and monitors are a game-changer as this allows us to accurately monitor air quality at an unprecedented scale,” noted Ty Newell, VP at Build Equinox and Professor Emeritus at the University of Illinois at Urbana-Champaign. “The only reason submicron particle importance has not been emphasized in the building environment is a lack of cost-effective sensors with the capability to accurately measure submicron particles so the Canāree is what we’ve been waiting for.”

 

 

All Canāree monitors can measure accurately from PM0.1 to PM10 and come with a built-in ability to detect vape and smoke events. Air quality can be monitored through Piera’s SenseiAQ software that interfaces to the cloud for data access or can be integrated into existing Building Management or Building Automation Software (BMS/BAS). Canāree monitors are built on IPS technology which are the only low-cost sensors in the world certified by Korea Electronics Technology Institute (KETI) for operation at PM1.0, 2.5, and 10.0. More information about Canāree monitors can be found at https://www.pierasystems.com/canaree.

 

About Piera Systems, Inc.

Piera Systems Inc. is on a mission to make air quality measurement accurate, simple, inexpensive, and pervasive, enabling a major improvement in the health of all humans. Piera has developed a family of ‘Intelligent Particle Sensors’ utilizing a breakthrough custom processor to detect particulate matter (PM), a major component of air pollution. Unlike existing low-cost PM sensors, IPS has superior accuracy over a wider range, including harmful ‘very fine particles’ smaller than 1.0 micron, and reports particle size and count in real-time at low power. IPS is the first software defined PM sensor with up to 7 particle sizes allowing its use in many applications. IPS data is analyzed using AI/ML algorithms to identify and classify pollution sources such as vape, cigarette smoke, cooking, etc. IPS sensors and Canāree air quality monitors answer the question, ‘What’s In Your Air?’

Headquartered in the US, more information on Piera Systems air quality solutions can be found at https://www.pierasystems.com.

 

About Build Equinox

Build Equinox manufactures the CERV (pronounced “serve”) smart ventilation system. On-board CO2 and VOC sensors combined with heat pump energy recovery and MERV 13 filtration make the CERV the most capable air quality management system for high performance homes far exceeding ventilation standards. Real-time monitoring of the home’s air quality along with temperature and humidity give control and peace of mind to homeowners that their house is being kept healthy and comfortable. Additional features include wireless sensors and ventilation switches, UV light sanitation, and zone dampers. Designed and built in the United States, the CERV is UL Listed.

More information can be found at https://www.buildequinox.com/.

 

Contact Information

Raj Seelam

Vice President of Marketing & Customer Success

raj.seelam@pierasystems.com

 

Ty Newell

Vice President

ty@buildequinox.com

Piera Systems and ESRG Partner to Monitor Air Quality in Nigeria

Canāree Air Quality Monitors deployed to measure air quality and identify sources

 

Nigeria has the largest economy in Africa and the 27’th largest economy in the world in terms of nominal GDP.[1]  Accompanying this growth is air pollution.  In 2019, the entire Nigerian population lived with PM2.5 concentrations above the WHO air quality guideline of 5 ug/m3 [2].  With Nigeria’s mean concentration at 72 ug/m3, 15 x the WHO guideline, it has the fourth most polluted air of any country after China, India, and Pakistan.

 

Contributors to poor air quality in Nigeria include vehicle emissions, solid waste burning, and industrial emissions.  Seasonal variations in pollution exist, with the highest levels of air pollution in the dry season (Harmattan, November to March) during which agricultural burning occurs.[3]  Unlike the USA, Nigeria does not have a national network of air quality monitoring stations to monitor wildfire smoke so local authorities, citizen scientists, and researchers are leveraging a new generation of affordable air quality monitors to provide real-time updates, help shape government policy, and improve the health of citizens.

 

 

To that end, Piera Systems, developers of the industry’s most accurate, low-cost Intelligent Particulate Sensors and family of Canāree™ Air Quality Monitors is partnering with Professor Francis Abulude, PhD, CEO of the Science and Education Development Institute, Akure, Ondo State, Nigeria to deploy a network of Canāree monitors in schools, hospitals, homes, and offices starting in December 2021.  During the 6-month Harmattan season, data from the Canāree monitors will be sent to Piera’s SenseiAQ™ cloud for analysis.  SenseiAQ provides real-time data on intuitive dashboards and maps along with alerts when air quality is poor.  Analysis of the data will classify likely sources of pollution including cooking, vehicle pollution, wildfires, diesel generators, vape, and tobacco smoking. This uniquely differentiated capability of identifying sources of pollution will lead to more effective mitigation techniques designed to reduce the immediate health impact, inform citizens of hot spots, and help drive government policies and regulation.

 

 

Dr. Abulude’s team at ESRG (Environmental and Sustainable Research Group (ESRG, Nigeria) a division of Science and Education Development Institute, Nigeria will deploy and manage the Canāree monitors. The data from this project will help in our global effort to improve air quality, deal with the impacts of climate change, and improve the health of everyone. Progress of the project will be kept up to date on the ‘Canāree Sentinels’ community group on Facebook. As with miners in the UK who deployed real canaries as sentinels in coal mines, these 21st century Canāree monitors will act as sentinels to avoid unnecessary deaths and health impacts due to air pollution. More information on Canāree monitors can be found at https://www.pierasystems.com/canaree.

 

About Piera Systems, Inc.

Piera Systems Inc. is on a mission to make air quality measurement accurate, simple, inexpensive, and pervasive, enabling a major improvement in the health of all humans. Piera has developed a family of ‘Intelligent Particle Sensors’ utilizing a breakthrough custom processor to detect particulate matter (PM), a major component of air pollution. Unlike existing low-cost PM sensors, IPS has superior accuracy over a wider range, including harmful ‘very fine particles’ smaller than 1.0 micron, and reports particle size and count in real-time at low power. IPS is the first software defined PM sensor with up to 7 particle sizes allowing its use in many applications. IPS data is analyzed using AI/ML algorithms to identify and classify pollution sources such as vape, cigarette smoke, cooking, etc. IPS sensors and Canāree air quality monitors answer the question, ‘What’s In Your Air?’

Headquartered in the US, more information on Piera Systems air quality solutions can be found at https://www.pierasystems.com

 

About ESRG

The Environmental and Sustainable Research Group (ESRG) is a group committed to advancing research-based issues of the environment and sustainability. This research group was established in Nigeria in January 2016. The group focuses on the environmental problems that threaten the health of living things. The main foci of the group include:

i. Plays an important role in any form to ensure the creation of a sustainable future

ii. of indoor and outdoor aerosols with a view of reducing the impact on children and women especially.

iii. Collaborates on the issues of sustainable cities and communities

iv.And partnerships in activities involving clean water and sanitation

 

[1] Wikipedia, World Bank
[2] State of Global Air Reports for 2019 and 2020
[3] International Association for Medical Assistance to Travelers

Piera Systems Announces Certification to ISO 21501-4 Cleanroom Standard, a World First for Low-Cost Particle Sensors

Scottsdale, AZ – Jan 13 2022. Piera Systems (“Piera”) is proud to announce the release of calibration certificate for its Intelligent Particle Sensors (“IPS”), tested and calibrated in accordance with ISO 21501-4 standard, a requirement for particle counters used in many applications where accuracy and precision between instruments are high. Piera’s affordable Canāree Air Quality Monitors are built using this IPS technology. This is the first time a low-cost sensor has demonstrated that it is calibratable to this strict standard, which is normally used to calibrate reference grade instruments and monitors.

 

The ISO 21501-4, and its companion standard ISO 14644-1, are widely used in applications where tolerance for particle contamination is quite low including in the electronics and semiconductor industries, pharmaceutical industry, and medical environments. These standards set forth stringent tolerance levels for performance of particle counters across many criteria including accuracy of particle counts and precision across measurements from multiple instruments as well as calibration procedures and verification methods.

 

“Being able to calibrate our sensors to ISO 21501-4 is a testament to our ‘correct by construction’ technology stack including our revolutionary ASIC, calibration algorithms and methodologies, and our highly scalable test and QA processes,” said Aaron Soh, Founder and CTO of Piera Systems. “We are immensely proud of our R&D team’s ability to deliver superior air quality data that’s comparable to a reference instrument at a fraction of the price.”

 

This unprecedented ability to accurately count particles at an affordable price-point unlocks brand new applications in a number of industries as this performance has thus far only been possible with reference grade instruments and monitors which can cost 10s of thousands of dollars making them unscalable. Environments that are highly sensitive to particle pollution, such as a pharmaceutical cleanroom or a hospital surgical room, can now deploy a vast array of Piera’s sensors and monitors to accurately monitor air quality in real time and ensure a high standard of operating environments.

 

 

 

“As a provider of air quality monitoring solutions to pharmaceutical and healthcare facilities, we adhere to stringent performance standards and expect the same from our technology and product partners,” said Séverine MORIAU, Head of R&D at Zaack. “Specialized air quality monitoring solutions, like our Zaack CR® cleanroom air quality monitor, require extreme attention to detail and are heavily regulated. We collaborated closely with Piera to certify their sensors to ISO 21501-4 which coupled with their highly affordable price-point makes them an ideal partner for Zaack’s products and services.”

 

For more information on the ISO standards referenced in this document, please refer to this article. Please contact Piera Systems to obtain a copy of the ISO certificate and accompanying test results.

 

About Piera Systems, Inc.

Piera Systems Inc. is on a mission to make air quality measurement accurate, simple, inexpensive, and pervasive, enabling a major improvement in the health of all humans. Piera has developed a family of ‘Intelligent Particle Sensors’ utilizing a breakthrough custom processor to detect particulate matter (PM), a major component of air pollution. Unlike existing low-cost PM sensors, IPS has superior accuracy over a wider range, including harmful ‘very fine particles’ smaller than 1.0 micron, and reports particle size and count in real-time at low power. IPS is the first software defined PM sensor with up to 7 particle sizes allowing its use in many applications. IPS data is analyzed using AI/ML algorithms to identify and classify pollution sources such as vape, cigarette smoke, cooking, etc. IPS sensors and Canāree air quality monitors answer the question, ‘What’s In Your Air?’

Headquartered in the US, more information on Piera Systems air quality solutions can be found at https://www.pierasystems.com

 

About Zaack

ZAACK is the research and development subsidiary of IGIENAIR Group. It was founded in 2017 and it offers innovative connected technologies for indoor air quality monitoring. ZAACK started by developing a full range of indoor air quality monitoring systems for commercial and residential spaces and is currently developing a range for special applications such as cleanrooms and healthcare facilities.

Zaack CR® is the only compact plug & play cleanroom monitoring station that can monitor in real time, particles (pcs/m3), temperature, relative humidity and differential pressure. It gives the operators real-time access to critical data over the cloud. Data is automatically logged and saved on the cloud or on the client’s server. Users have the choice to work with raw data or to view in graphical smart phone and web applications.

For more information on our products & air quality services, visit: zaack.io & igienair.com

 

Contact Information

Raj Seelam

Vice President of Marketing & Customer Success

raj.seelam@pierasystems.com

 

Séverine MORIAU

Head of Research and Development

contact@zaack.io

What is ISO 21501-4 Cleanroom Standard and why does it matter?

Introduction

Optical particle sensors are being widely deployed in outdoor and indoor applications to monitor air quality and control air cleaning technologies.  Low-cost sensors are not designed to replace expensive reference instruments but are being widely adopted in a range of applications with 57M units shipped last year.  There are many studies discussing the limitations of these devices especially for indoor sources[1]. The EPA cautions that their data are ‘estimates’ and not a substitute for expensive reference devices.  They all use similar low-cost electronics.  Seeing a better way, Piera leveraged advances in semiconductors, Machine Learning/AI and an increasing understanding of the health threat created by sub-micron particles to create a new generation of Intelligent Particle Sensors (IPS) with more accurate, complete data on particle size and count which can identify likely sources of pollution.  This data driven approach in a real-time monitor provides insight and enables actions to be taken to reduce or remove particle sources and improve air quality.  Achieving this in a low-cost device required a ‘correct by construction’ technology stack including a revolutionary ASIC, calibration algorithms and methodologies, and highly scalable test and QA processes.  Piera’s devices are calibrated based on particle count and size, unlike all other low-cost sensor manufacturers that utilize Mass Concentration (MC or PM).  This enables IPS to meet the ISO 21501-4 standard for calibration of optical sensors.  ISO 21501-4 compliance is a requirement for monitoring clean rooms under ISO 14244-1.  Piera’s IPS is the first low-cost sensor to achieve this certification.

 

The ISO 21501-4 Standard

The International Organization for Standardization (ISO), introduced ISO 21501 in 2007… “to provide a calibration procedure and verification method for particle counters, so as to minimize the inaccuracy in the measurement result by a counter, as well as the difference in the results measured by different instruments.”  The 2015 publication includes 4 different sections with each dedicated to a specific particle counting technology/application.  Part 4 (-4): Light Scattering Airborne Particle Counter for Clean Spaces applies to Light Scattering Aerosol Particle Counters (LSAPC). Piera’s IPS is an LSAPC.  The ISO14644-1 standard for clean rooms requires monitoring with instruments calibrated to ISO 21501-4.  Certification to ISO 21501-4 can be done by any company following strict testing requirements.  Piera has utilized a third-party testing lab, The Korea Electronics Technology Institute (KETI) for its certification.

Following the testing protocol specified in ISO 21501-4, KETI tested 4 IPS sensors from a standard production run utilizing a controlled chamber and PSL particles of sizes 0.3, 0.5, 1.0 microns traceable to NIST.  A flow meter monitored air flow and a reference instrument (Grimm 11-D) calibrated to ISO 21501-4 was compared to the ISP sensors.  During the test period, Counting Efficiency and Flow rate were measured for each of the 3 particle sizes.   Key metrics reported include Average of Fine dust (#/m2), False count rate (#/m2), counting efficiency (%), uncertainty (%), Flow rate (L/min).  ISO 21501-4 mandates counting efficiency within 10% of the reference device which was met for all devices at all sizes.  Copies of the certification document and test report are available upon request.

Applications that benefit from ISO 21501-4 certified sensors and instruments include hospitals, healthcare facilities, electronic and semiconductor manufacturing facilities, pharmaceutical and other industrial workplaces.   Piera’s Canāree Air Quality Monitors are the first affordable devices that have a ‘clean room’ quality sensor.

 

Certifications and Standards for measuring air quality

The Clean Air Act requires the EPA to set National Ambient Air Quality Standards (NAAQS) for pollutants that are common in outdoor air.  The WHO has similar standards but at a much lower level and in Sept 2021, WHO reduced the daily value for PM 2.5 in half to 5.0ug (the US is still at 12.5 ug but this is under review).  PM is short for Mass Concentration (MC or PM) the weight of all the particles (ug or micrograms) 2.5 microns and below.  MC is not used to measure air quality when it’s made up of smaller particles.  Instead, particle count and size are needed as in ISO 21501-4.  The current generation of low-cost sensors are calibrated to MC since that is what the EPA mandates and are not able to reliably measure below 10 ug, especially in environments where submicron particles are dominant (indoors).

There are no equivalent standards for Indoor Air Quality.  Since ISO 14244-1 is already used indoors and measures particles of sizes 0.1, 0.3, 0.5 and 1.0 microns it should be considered.  In fact, Class 9 is considered ‘Normal’ or good air, see Table 1.

 

 

Instead, several third party indoor ‘standards and certifications’ have emerged based on MC.  These include ASHRAE Standard 62.1, ASTM-D8405-21, MCERTS (UK).  In the built environment RESET, WELL, LEEDS have developed their own audit and compliance standards.

Regardless of what standard is used a common requirement is the need to have a methodology for calibration. ISO 21501-4 is the recognized standard for optical particle counter calibration.

 

Summary

Piera’s custom PSC-1 processor with 3 US patents is the foundation of our IPS Sensor and Canāree AQMs.  Representing years of development and leveraging advanced semiconductor processes it delivers accurate and precise data on particle size and count across a wide range of particle sizes for all our devices.  It’s the basis of our ‘correct by construction’ technology stack and investments in calibration and testing ensuring every device meets specifications and allows customers to use them with confidence.

You might not need your home, office, or public space to be a class 6 ‘clean room’, but you do want the air to be good enough not to affect your health.  This requires the type of data delivered by Piera.

 

 

[1] Response of consumer and research grade indoor air quality monitors to residential sources of fine particles, Singer, Delp  https://pubmed.ncbi.nlm.nih.gov/29683219/

Better Data for Cleaner Air – A New Paradigm in Air Quality Monitoring

For decades, air quality measurements have been synonymous with measuring PM2.5 and PM10, combined weight of particles of size 2.5 and 10 microns, driven by the US EPA and other governmental bodies around the world. While PM2.5 and PM10 do an adequate job of representing outdoor air quality, it paints a woefully incomplete picture when measuring indoor air quality.

Indoors is where most of our time is spent and it’s dominated by particles smaller than 2.5 microns – very fine and ultrafine particles. Decades of research demonstrates that these smaller particles are significantly more dangerous to human health thus necessitating better measurement and mitigation of these harmful particles.

This paper intends to provide an overview of the current state of air quality measurements, the detrimental health effects caused by smaller particles, and why shifting the paradigm to measuring smaller particles is paramount to improving air quality and human health everywhere.

Download this free whitepaper “Better Data for Cleaner Air: A New Paradigm in Air Quality Monitoring“.

Mysupplier Creates a Safe Ice Rink and Boosts Customer Confidence with Piera Systems’ Technologies

As the world emerges from a pandemic, there are still many lingering worries about how to live, work, and play safely in a post-pandemic world. What we took for granted before the pandemic—a routine commute to work in the morning and taking kids to the ice rink in the evening — have become exercises in interpreting byzantine scientific theories or, more likely, leaps of faith that it’ll all be okay. Providing customers and employees the confidence that your space is clean and safe for them to come back to continues to be an existential imperative for buildings and facilities owners around the world.

 

Read more on how Mysupplier and Piera Systems deployed cutting edge technology to keep customers safe in an Atlanta ice rink.

 

Monitoring Indoor Air Quality Improves Health, Productivity

Every day we learn more about the impact poor air quality has on our health, productivity, and its economic impact.  Covid and climate change are tipping points for action.  Wildfires are impacting millions across the US.  What can I do to mitigate these threats to my family, business, the planet?  You don’t need to be an atmospheric scientist nor spend money on air purification technologies.  Start with monitoring the air indoors – at your office and home. You spend 80 % of your time indoors and indoor air quality is 2-5 times worse than outdoors.  Indoor air pollution is ranked as one of the EPA’s top 5 environmental risks to public health and there have been numerous studies linking indoor air quality to illness[1].  The EPA reports only outdoor air pollution caused by coarse (PM10) and fine (PM2.5) particulate matter alongside gases.  Indoor air quality is different, with sources infiltrating from outdoors but additionally from people and their activities.   It’s the ‘very fine’ (PM1.0 to PM0.1) particles that are most dangerous to your health (wildfire smoke, cooking, tobacco, wood stoves, dust, vape, etc.).  They are also invisible, readily absorbed into the bloodstream.

As a result of Covid-19 and its transmission in aerosol form, the EPA, CDC, DOE and WHO have released guidelines for reducing transmission by up to 50 % by; increasing the flow of ‘fresh’ (outside) air;  the use of MERV-13 filtration in the HVAC system; augmenting this with air cleaning technologies which have a CADR (Clean Air Deliver Rate) sized to the room they are used in.  Researchers also recommend measuring the effectiveness of these approaches through testing of particle count and size using low-cost Air Quality Monitors [2].

What if there was a low cost, real time way to monitor indoor air especially very fine particles, determine when it’s bad, identify possible sources, and take steps to improve and remove it?  You could answer these questions:

  • Is my Indoor Air Good ?  If not, what is the source?
  • Is my HVAC system making it better or worse? Do the filters need to be changed?
  • Am I getting enough fresh air into the home? Is the outdoor air ‘good’?
  • Are some rooms in my building ‘bad’? Is this a short-term event or longer, what could be the source?
  • Do I need to buy air purification technologies to complement my HVAC system? If so, how do I know if they are effective?

At Piera Systems, our technology originally developed to detect X-Rays by counting photons has been adapted to measure and count all sizes of particulate matter and forms the brains of our Intelligent Particle Sensor (IPS) used in our Canāree Air Quality Monitors.  No other sensor currently available can measure coarse, fine and very fine particles and deliver the data needed to measure the effectiveness of any mitigation.  Its data can alert you to bad air events, the magnitude and duration, classify possible sources, suggest steps to mitigate, and monitor their effectiveness.

Don’t wait for the EPA, the CDC and the WHO, take action by knowing What’s in your Air?

[1] https://www.hsph.harvard.edu/c-change/?utm_source=os&utm_campaign=redirect_analysis

[2] EPA Webinar: Navigating the Landscape of Air Cleaning Tech for Covid-19, June 16, 2021