Infrared Gas Sensor Sales

Infrared Gas Sensor Sales Market Outlook

The global Infrared Gas Sensor Market is projected to reach a substantial size of approximately USD 1.5 billion by the year 2035, with a compound annual growth rate (CAGR) of around 6.8% during the forecast period from 2025 to 2035. This growth is primarily driven by the increasing demand for advanced gas detection technologies in various industries, coupled with stringent environmental regulations aimed at monitoring and reducing hazardous emissions. The rising focus on safety and security in industrial applications, along with the expanding need for real-time monitoring in residential and commercial buildings, further propels the adoption of infrared gas sensors. Additionally, technological advancements and innovations in sensor design are enhancing the performance and reliability of these devices, contributing to market growth.

Growth Factor of the Market

The growth of the Infrared Gas Sensor Market can be attributed to several key factors. Firstly, the escalating environmental concerns and regulatory measures pertaining to air quality monitoring are prompting industries to invest in advanced gas detection systems. As industries strive to comply with stringent regulations, the need for reliable gas sensors becomes paramount. Secondly, the increased usage of infrared gas sensors in the oil and gas sector for leak detection and monitoring purposes is another significant driver of market growth. Moreover, the rising adoption of smart technologies, including IoT-enabled sensors, is transforming the gas detection landscape, facilitating real-time data collection and analysis. The growing trend of automation in various sectors also underscores the importance of these sensors, as they contribute to enhanced operational efficiency and safety. Furthermore, the expanding applications of infrared gas sensors across diverse sectors, including HVAC and environmental monitoring, are fueling demand.

Key Highlights of the Market

• The global Infrared Gas Sensor Market is expected to grow at a CAGR of 6.8% from 2025 to 2035.
• Fixed Infrared Gas Sensors dominate the market due to their wide application range and reliability.
• North America is anticipated to hold the largest market share, driven by stringent environmental regulations.
• Technological advancements and the integration of IoT are transforming gas detection capabilities.
• Environmental monitoring applications are emerging as a key segment for market growth.

By Product Type

Fixed Infrared Gas Sensors:

Fixed Infrared Gas Sensors are widely utilized in various industrial applications due to their reliability and continuous monitoring capabilities. These sensors are designed to remain stationary and provide real-time measurements of gas concentrations in a specific location. The fixed nature of these sensors makes them ideal for permanent installations in environments where gas leaks or emissions are a concern. They are commonly deployed in facilities such as refineries, chemical plants, and manufacturing units. The growing emphasis on workplace safety and regulatory compliance is driving the demand for fixed infrared gas sensors, as they offer a robust solution for hazard detection and management.

Portable Infrared Gas Sensors:

Portable Infrared Gas Sensors offer flexibility and convenience, allowing for on-the-go measurements in various environments. These compact devices are particularly useful for field applications where mobility is essential, such as in environmental monitoring or during emergency response situations. Their lightweight design and ease of use make them popular among technicians and operators who require immediate gas concentration readings. The increasing prevalence of portable sensors is closely linked to the rising need for safety protocols in industries such as construction, mining, and oil & gas, where workers are often exposed to hazardous gases. Their versatility and effectiveness in emission detection contribute to their growing adoption across different sectors.

Wireless Infrared Gas Sensors:

Wireless Infrared Gas Sensors represent a significant innovation in gas detection technology, facilitating remote monitoring and data transmission without the constraints of wired connections. These sensors utilize wireless communication protocols to transmit real-time data to centralized monitoring systems or mobile devices, enhancing operational efficiency and safety. The ability to deploy sensors in hard-to-reach areas without the need for extensive wiring makes wireless models particularly attractive for industries such as oil and gas, where operational environments can be challenging. The increasing demand for remote monitoring solutions, coupled with advancements in wireless technology, is expected to propel the growth of wireless infrared gas sensors in the coming years.

Miniature Infrared Gas Sensors:

Miniature Infrared Gas Sensors are compact devices that provide effective gas detection capabilities in a small form factor. These sensors are particularly suitable for applications in consumer electronics, HVAC systems, and smart home devices, where space is a premium. The trend towards miniaturization in technology has led to the development of these sensors, enabling advanced gas detection functionalities in devices like smoke alarms and air quality monitors. As consumers become more aware of indoor air quality and environmental safety, the demand for such compact solutions is expected to grow, positioning miniature infrared gas sensors as a vital segment of the market.

Non-Dispersive Infrared Gas Sensors:

Non-Dispersive Infrared (NDIR) Gas Sensors are known for their accuracy and reliability in detecting specific gas concentrations, making them suitable for various industrial applications. These sensors operate on the principle of measuring the absorption of infrared light by gas molecules, allowing for precise determination of gas concentrations. NDIR sensors are widely used in applications such as automotive exhaust analysis, HVAC systems, and environmental monitoring. Their robustness and ability to function in different environmental conditions further enhance their appeal, leading to increased adoption across industries. The ongoing advancements in NDIR technology are also expected to drive innovations that will improve performance and expand their application range.

By Application

Oil & Gas:

The oil and gas sector is one of the primary applications for infrared gas sensors, where they play a critical role in ensuring safety and monitoring emissions. These sensors are utilized for detecting hazardous gases such as methane, propane, and carbon dioxide, which can pose significant risks if left undetected. The sector's emphasis on safety regulations and the prevention of environmental incidents drives the demand for reliable gas detection systems. Moreover, as oil and gas companies implement more stringent safety measures and invest in advanced monitoring technologies, the adoption of infrared gas sensors is expected to grow, ensuring compliance with regulatory requirements and enhancing operational safety.

Chemicals:

Infrared gas sensors are extensively used in the chemical industry for monitoring hazardous gases released during production processes. The ability to detect specific gas concentrations accurately is vital for maintaining safe working environments and ensuring compliance with health and safety regulations. These sensors allow for real-time monitoring of gas emissions, enabling prompt responses to any leaks or abnormal readings. The increasing focus on sustainable practices and reducing environmental impact within the chemical industry is further driving the demand for advanced gas detection technologies. As companies move towards more automated processes, infrared gas sensors are likely to become integral components of safety and monitoring systems.

Environmental Monitoring:

The application of infrared gas sensors in environmental monitoring is gaining prominence due to increasing awareness of air quality and environmental protection. These sensors are deployed in both urban and industrial settings to monitor pollutant levels and assess compliance with environmental regulations. By providing real-time data on gas concentrations, infrared gas sensors contribute significantly to environmental health initiatives and pollution control efforts. As governments and organizations worldwide prioritize environmental sustainability, the need for effective monitoring solutions is expected to rise, further expanding the market for infrared gas sensors in this application area.

HVAC:

In the HVAC sector, infrared gas sensors are utilized to monitor indoor air quality and optimize ventilation systems. These sensors help detect harmful gases such as carbon dioxide and volatile organic compounds, ensuring that indoor air quality meets safety regulations. The growing emphasis on energy efficiency and the implementation of smart building technologies are driving the adoption of infrared gas sensors in HVAC applications. By integrating gas sensors into HVAC systems, building operators can enhance air quality, reduce energy consumption, and improve occupant comfort, making these sensors essential components of modern building management systems.

Others:

In addition to the primary applications mentioned, infrared gas sensors find usage in various other sectors, including automotive, food and beverage, and manufacturing. In the automotive industry, these sensors are employed for monitoring exhaust emissions and maintaining compliance with environmental standards. In the food and beverage sector, they assist in monitoring fermentation processes and ensuring product quality. The versatility and adaptability of infrared gas sensors in diverse applications highlight their significance as a fundamental technology in ensuring safety and compliance across industries. The continuous development and innovation in sensor technology will likely uncover new applications and opportunities for growth in the coming years.

By Distribution Channel

Direct Sales:

Direct sales play a crucial role in the distribution of infrared gas sensors, allowing manufacturers to establish direct relationships with customers and provide tailored solutions. This channel enables companies to understand their clients' specific needs and offer specialized products that meet regulatory and operational requirements. Direct sales are particularly advantageous for large industries where customized solutions are essential, as they facilitate effective communication and support throughout the purchasing process. As companies prioritize safety and compliance, the demand for direct sales channels is expected to grow, fostering closer collaboration between manufacturers and end-users.

Indirect Sales:

Indirect sales channels, including distributors and resellers, are essential for expanding the reach of infrared gas sensors in various markets. These channels allow manufacturers to leverage existing networks and gain access to a broader customer base without the need for extensive direct sales efforts. Indirect sales are particularly beneficial for reaching small and medium-sized enterprises that may not have the resources to engage directly with manufacturers. As the demand for gas sensors continues to rise across industries, the role of indirect sales channels in facilitating market penetration and providing customers with a diverse range of options will become increasingly important.

By Technology

Catalytic:

Catalytic technology is one of the foundational methods used in gas detection, particularly for flammable gases. Catalytic sensors operate by utilizing a heated element that reacts with combustible gases, leading to a change in temperature that can be measured to determine gas concentration levels. This technology is widely regarded for its reliability and sensitivity, making it suitable for applications in hazardous environments such as oil and gas facilities, chemical plants, and other industrial settings. The ongoing advances in catalytic sensor technology are enhancing their performance and expanding their applicability, contributing to the growing demand for this technology in gas detection systems.

Infrared:

Infrared technology, particularly in the context of non-dispersive infrared (NDIR) sensors, is pivotal for accurate gas detection and monitoring. NDIR sensors utilize infrared light to determine gas concentrations based on the absorption characteristics of specific gas molecules. This technology is highly effective for measuring various gases, including carbon dioxide, methane, and volatile organic compounds. The advantages of infrared sensors, such as their accuracy, reliability, and minimal maintenance requirements, have made them a preferred choice across diverse applications, from environmental monitoring to industrial safety. As technological advancements continue, the infrared segment is expected to see further innovation and increased adoption.

Electrochemical:

Electrochemical technology is commonly used for detecting toxic gases due to its sensitivity and specificity. Electrochemical sensors operate by measuring the current produced during a chemical reaction with the target gas, allowing for precise concentration readings. These sensors are particularly effective in applications related to workplace safety, environmental monitoring, and personal safety devices. The growing focus on occupational health and safety regulations is driving the demand for electrochemical sensors, as industries seek reliable solutions to detect hazardous gases. As manufacturers improve the performance and lifespan of these sensors, their adoption is likely to increase, enhancing safety across various sectors.

Semiconductor:

Semiconductor gas sensors are known for their compact size and cost-effectiveness, making them suitable for a wide range of applications, including consumer electronics and automotive systems. These sensors operate by detecting changes in electrical resistance when exposed to target gases. Their versatility and ability to provide quick responses make them popular for applications in air quality monitoring and industrial safety. The growing emphasis on smart technology and Internet of Things (IoT) applications is driving innovation in semiconductor sensor technology, leading to improved performance and expanded functionalities. As the market for portable and smart devices continues to grow, semiconductor sensors are poised for increased adoption.

PID:

Photoionization detection (PID) technology is increasingly being recognized for its ability to detect a wide range of volatile organic compounds (VOCs) and other hazardous gases. PID sensors work by ionizing gas molecules with ultraviolet light, allowing for the detection of even low concentrations of gases. This technology is particularly useful in environmental monitoring and industrial applications where the detection of trace gases is critical. The heightened awareness of air quality issues and regulatory compliance drives the demand for PID sensors, making them a valuable asset in both industrial and environmental applications. Ongoing advancements in PID technology are expected to enhance sensor sensitivity and broaden their application scope.

By Region

The North American region is poised to dominate the Infrared Gas Sensor Market, accounting for nearly 35% of the total market share. This dominance can be attributed to stringent environmental regulations coupled with a growing emphasis on workplace safety in industrial settings. The presence of major oil and gas companies, alongside a robust manufacturing sector, underscores the need for advanced gas detection technologies in this region. Additionally, the rapid adoption of smart technologies and IoT applications in North America is expected to further drive the demand for infrared gas sensors. The market in this region is anticipated to grow at a CAGR of 7.5% during the forecast period, reflecting the ongoing investments in safety and compliance measures.

Europe is also a significant player in the Infrared Gas Sensor Market, holding approximately 28% of the overall market share. The region's stringent environmental policies and commitment to reducing greenhouse gas emissions have fueled the demand for gas monitoring solutions. Additionally, countries in Europe are increasingly investing in renewable energy sources, further necessitating the adoption of advanced gas detection technologies. The growing focus on air quality and environmental protection initiatives is expected to contribute to the steady growth of the market in this region. In contrast, the Asia Pacific region is witnessing rapid industrialization and urbanization, leading to an increased focus on safety regulations and environmental monitoring, thereby driving the adoption of infrared gas sensors.

Opportunities

One of the most promising opportunities in the Infrared Gas Sensor Market lies in the increasing demand for environmental monitoring solutions. As governments and organizations across the globe emphasize sustainable practices and pollution control measures, the need for effective gas detection systems becomes paramount. Infrared gas sensors play a vital role in monitoring air quality and ensuring compliance with environmental regulations. This trend presents a significant opportunity for manufacturers to develop innovative sensor technologies that meet the growing demands of environmental monitoring applications. Additionally, the integration of advanced technologies such as IoT and artificial intelligence into gas detection systems is expected to enhance data collection and analysis capabilities, opening new avenues for growth.

Another opportunity for growth in the Infrared Gas Sensor Market stems from the rising adoption of smart home and building automation systems. As consumers become more aware of indoor air quality and its impact on health, there is a growing demand for advanced gas detection solutions in residential settings. Infrared gas sensors can be integrated into HVAC systems and smart devices, providing real-time monitoring of indoor air quality. The increasing focus on energy efficiency and the implementation of smart technologies in buildings create opportunities for manufacturers to develop innovative solutions that meet consumer demands for safety and comfort. This convergence of technology and consumer awareness positions the infrared gas sensor market for substantial growth in the coming years.

Threats

While the Infrared Gas Sensor Market presents numerous growth opportunities, it also faces several threats that could impede progress. One significant concern is the intense competition among manufacturers, which may lead to pricing pressures and reduced profit margins. As more companies enter the market, the increasing availability of low-cost alternatives may compromise product quality and reliability. This challenge is particularly pronounced in regions where price sensitivity is high, potentially impacting the overall market dynamics. Additionally, rapid technological advancements may render existing products obsolete, necessitating continuous innovation to stay competitive. Companies must invest in research and development to keep pace with evolving customer demands and technological trends.

Another restraining factor for the Infrared Gas Sensor Market is the potential regulatory challenges that manufacturers may face. Compliance with ever-changing industry standards and environmental regulations can be complex and costly. Companies must keep abreast of regulatory requirements in various regions and ensure that their products align with legislative changes. Moreover, the increasing focus on sustainability may require manufacturers to adopt greener production practices and technologies. Failure to adapt to these regulations and market expectations could hinder growth and impact market share. Thus, companies must remain agile and proactive in addressing regulatory challenges to ensure long-term success.

Competitor Outlook

• Honeywell International Inc.
• Drägerwerk AG & Co. KGaA
• Emerson Electric Co.
• MSA Safety Incorporated
• Figaro Engineering Inc.
• Teledyne Technologies Incorporated
• Siemens AG
• 3M Company
• Ametek, Inc.
• Gas Sensing Solutions Ltd.
• Sensor Electronics Corporation
• Winters Instruments
• RKI Instruments, Inc.
• Industrial Scientific Corporation
• Blueair

The competitive landscape of the Infrared Gas Sensor Market is characterized by the presence of several key players striving for market share and technological advancements. These companies are increasingly focused on research and development to innovate and improve the performance of their gas detection technologies. Strategic partnerships, collaborations, and acquisitions are common trends among industry players as they seek to expand their product portfolios and enhance their market presence. The rising demand for safety and compliance solutions across various industries further intensifies competition, prompting companies to adopt aggressive marketing strategies and customer engagement initiatives.

Honeywell International Inc. is a prominent player in the infrared gas sensor market, boasting a diverse portfolio of advanced gas detection systems. The company's commitment to innovation is evident in its continuous investment in research and development, enabling it to introduce cutting-edge sensor technologies that cater to a wide range of applications. Similarly, Drägerwerk AG & Co. KGaA is recognized for its expertise in safety solutions, specializing in infrared gas sensors for industrial applications. The company focuses on developing reliable and accurate gas detection systems, making it a preferred choice among customers in the oil and gas, chemicals, and manufacturing sectors.

Emerson Electric Co. is another key competitor in the market, providing a comprehensive range of infrared gas sensors for various applications. The company's strong emphasis on sustainability and environmental protection aligns with the growing market demand for effective gas monitoring solutions. Additionally, MSA Safety Incorporated is well-known for its high-quality gas detection technologies, including infrared sensors designed for hazardous environments. As the market evolves, these companies will continue to play a crucial role in driving innovations and enhancing the overall safety landscape through advanced gas detection solutions.

• 1 Appendix

  • 1.1 List of Tables
  • 1.2 List of Figures

• 2 Introduction

  • 2.1 Market Definition
  • 2.2 Scope of the Report
  • 2.3 Study Assumptions
  • 2.4 Base Currency & Forecast Periods

• 3 Market Dynamics

  • 3.1 Market Growth Factors
  • 3.2 Economic & Global Events
  • 3.3 Innovation Trends
  • 3.4 Supply Chain Analysis

• 4 Consumer Behavior

  • 4.1 Market Trends
  • 4.2 Pricing Analysis
  • 4.3 Buyer Insights

• 5 Key Player Profiles

  • 5.1 Blueair
    • 5.1.1 Business Overview
    • 5.1.2 Products & Services
    • 5.1.3 Financials
    • 5.1.4 Recent Developments
    • 5.1.5 SWOT Analysis
  • 5.2 3M Company
    • 5.2.1 Business Overview
    • 5.2.2 Products & Services
    • 5.2.3 Financials
    • 5.2.4 Recent Developments
    • 5.2.5 SWOT Analysis
  • 5.3 Siemens AG
    • 5.3.1 Business Overview
    • 5.3.2 Products & Services
    • 5.3.3 Financials
    • 5.3.4 Recent Developments
    • 5.3.5 SWOT Analysis
  • 5.4 Ametek, Inc.
    • 5.4.1 Business Overview
    • 5.4.2 Products & Services
    • 5.4.3 Financials
    • 5.4.4 Recent Developments
    • 5.4.5 SWOT Analysis
  • 5.5 Winters Instruments
    • 5.5.1 Business Overview
    • 5.5.2 Products & Services
    • 5.5.3 Financials
    • 5.5.4 Recent Developments
    • 5.5.5 SWOT Analysis
  • 5.6 Emerson Electric Co.
    • 5.6.1 Business Overview
    • 5.6.2 Products & Services
    • 5.6.3 Financials
    • 5.6.4 Recent Developments
    • 5.6.5 SWOT Analysis
  • 5.7 RKI Instruments, Inc.
    • 5.7.1 Business Overview
    • 5.7.2 Products & Services
    • 5.7.3 Financials
    • 5.7.4 Recent Developments
    • 5.7.5 SWOT Analysis
  • 5.8 Figaro Engineering Inc.
    • 5.8.1 Business Overview
    • 5.8.2 Products & Services
    • 5.8.3 Financials
    • 5.8.4 Recent Developments
    • 5.8.5 SWOT Analysis
  • 5.9 MSA Safety Incorporated
    • 5.9.1 Business Overview
    • 5.9.2 Products & Services
    • 5.9.3 Financials
    • 5.9.4 Recent Developments
    • 5.9.5 SWOT Analysis
  • 5.10 Gas Sensing Solutions Ltd.
    • 5.10.1 Business Overview
    • 5.10.2 Products & Services
    • 5.10.3 Financials
    • 5.10.4 Recent Developments
    • 5.10.5 SWOT Analysis
  • 5.11 Honeywell International Inc.
    • 5.11.1 Business Overview
    • 5.11.2 Products & Services
    • 5.11.3 Financials
    • 5.11.4 Recent Developments
    • 5.11.5 SWOT Analysis
  • 5.12 Sensor Electronics Corporation
    • 5.12.1 Business Overview
    • 5.12.2 Products & Services
    • 5.12.3 Financials
    • 5.12.4 Recent Developments
    • 5.12.5 SWOT Analysis
  • 5.13 Drägerwerk AG & Co. KGaA
    • 5.13.1 Business Overview
    • 5.13.2 Products & Services
    • 5.13.3 Financials
    • 5.13.4 Recent Developments
    • 5.13.5 SWOT Analysis
  • 5.14 Industrial Scientific Corporation
    • 5.14.1 Business Overview
    • 5.14.2 Products & Services
    • 5.14.3 Financials
    • 5.14.4 Recent Developments
    • 5.14.5 SWOT Analysis
  • 5.15 Teledyne Technologies Incorporated
    • 5.15.1 Business Overview
    • 5.15.2 Products & Services
    • 5.15.3 Financials
    • 5.15.4 Recent Developments
    • 5.15.5 SWOT Analysis

• 6 Market Segmentation

  • 6.1 Infrared Gas Sensor Sales Market, By Technology
    • 6.1.1 Catalytic
    • 6.1.2 Infrared
    • 6.1.3 Electrochemical
    • 6.1.4 Semiconductor
    • 6.1.5 PID
  • 6.2 Infrared Gas Sensor Sales Market, By Application
    • 6.2.1 Oil & Gas
    • 6.2.2 Chemicals
    • 6.2.3 Environmental Monitoring
    • 6.2.4 HVAC
    • 6.2.5 Others
  • 6.3 Infrared Gas Sensor Sales Market, By Product Type
    • 6.3.1 Fixed Infrared Gas Sensors
    • 6.3.2 Portable Infrared Gas Sensors
    • 6.3.3 Wireless Infrared Gas Sensors
    • 6.3.4 Miniature Infrared Gas Sensors
    • 6.3.5 Non-Dispersive Infrared Gas Sensors
  • 6.4 Infrared Gas Sensor Sales Market, By Distribution Channel
    • 6.4.1 Direct Sales
    • 6.4.2 Indirect Sales

• 7 Competitive Analysis

  • 7.1 Key Player Comparison
  • 7.2 Market Share Analysis
  • 7.3 Investment Trends
  • 7.4 SWOT Analysis

• 8 Research Methodology

  • 8.1 Analysis Design
  • 8.2 Research Phases
  • 8.3 Study Timeline

• 9 Future Market Outlook

  • 9.1 Growth Forecast
  • 9.2 Market Evolution

• 10 Geographical Overview

  • 10.1 Europe - Market Analysis
    • 10.1.1 By Country
      • 10.1.1.1 UK
      • 10.1.1.2 France
      • 10.1.1.3 Germany
      • 10.1.1.4 Spain
      • 10.1.1.5 Italy
  • 10.2 Asia Pacific - Market Analysis
    • 10.2.1 By Country
      • 10.2.1.1 India
      • 10.2.1.2 China
      • 10.2.1.3 Japan
      • 10.2.1.4 South Korea
  • 10.3 Latin America - Market Analysis
    • 10.3.1 By Country
      • 10.3.1.1 Brazil
      • 10.3.1.2 Argentina
      • 10.3.1.3 Mexico
  • 10.4 North America - Market Analysis
    • 10.4.1 By Country
      • 10.4.1.1 USA
      • 10.4.1.2 Canada
  • 10.5 Middle East & Africa - Market Analysis
    • 10.5.1 By Country
      • 10.5.1.1 Middle East
      • 10.5.1.2 Africa
  • 10.6 Infrared Gas Sensor Sales Market by Region

• 11 Global Economic Factors

  • 11.1 Inflation Impact
  • 11.2 Trade Policies

• 12 Technology & Innovation

  • 12.1 Emerging Technologies
  • 12.2 AI & Digital Trends
  • 12.3 Patent Research

• 13 Investment & Market Growth

  • 13.1 Funding Trends
  • 13.2 Future Market Projections

• 14 Market Overview & Key Insights

  • 14.1 Executive Summary
  • 14.2 Key Trends
  • 14.3 Market Challenges
  • 14.4 Regulatory Landscape

Segments Analyzed in the Report

The global Infrared Gas Sensor Sales market is categorized based on

By Product Type

• Fixed Infrared Gas Sensors
• Portable Infrared Gas Sensors
• Wireless Infrared Gas Sensors
• Miniature Infrared Gas Sensors
• Non-Dispersive Infrared Gas Sensors

By Application

• Oil & Gas
• Chemicals
• Environmental Monitoring
• HVAC
• Others

By Distribution Channel

• Direct Sales
• Indirect Sales

By Technology

• Catalytic
• Infrared
• Electrochemical
• Semiconductor
• PID

By Region

• North America
• Europe
• Asia Pacific
• Latin America
• Middle East & Africa

Key Players

• Honeywell International Inc.
• Drägerwerk AG & Co. KGaA
• Emerson Electric Co.
• MSA Safety Incorporated
• Figaro Engineering Inc.
• Teledyne Technologies Incorporated
• Siemens AG
• 3M Company
• Ametek, Inc.
• Gas Sensing Solutions Ltd.
• Sensor Electronics Corporation
• Winters Instruments
• RKI Instruments, Inc.
• Industrial Scientific Corporation
• Blueair